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                        Nonreturn valve for an exhaust line
                                - 
                                    Patent number 8,578,963
                                
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                                    Issue date Nov 12, 2013
                                
 
                                - 
                                         Centrotherm Systemtechnik GmbH Centrotherm Systemtechnik GmbH
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                                         Hans-Jürgen  Richter Hans-Jürgen  Richter
 
                                - 
                                         F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
 
 
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                        Gauge hatch with liquid seal
                                - 
                                    Patent number 6,629,621
                                
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                                    Issue date Oct 7, 2003
                                
 
                                - 
                                         The Protectoseal Company The Protectoseal Company
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                                         Thomas C. Piotrowski Thomas C. Piotrowski
 
                                - 
                                         F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT... F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
 
 
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                        Power operated air compressor assembly
                                - 
                                    Patent number 6,375,437
                                
- 
                                    Issue date Apr 23, 2002
                                
 
                                - 
                                         Stanley Fastening Systems, LP Stanley Fastening Systems, LP
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                                         Patrick B. Nolan Patrick B. Nolan
 
                                - 
                                         F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC... F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
 
 
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                        Gauge hatch with diaphragm and liquid seal
                                - 
                                    Patent number 6,244,457
                                
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                                    Issue date Jun 12, 2001
                                
 
                                - 
                                         The Protectoseal Company The Protectoseal Company
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                                         Thomas C. Piotrowski Thomas C. Piotrowski
 
                                - 
                                         F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT... F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
 
 
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                        Vent valve with liquid seal
                                - 
                                    Patent number 6,056,005
                                
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                                    Issue date May 2, 2000
                                
 
                                - 
                                         The Protectoseal Company The Protectoseal Company
- 
                                         Thomas C. Piotrowski Thomas C. Piotrowski
 
                                - 
                                         F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT... F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
 
 
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                        Magnetic quick action valve
                                - 
                                    Patent number 4,750,705
                                
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                                    Issue date Jun 14, 1988
                                
 
                                - 
                                         Man Technologie GmbH Man Technologie GmbH
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                                         Gernot  Zippe Gernot  Zippe
 
                                - 
                                         F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT... F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
 
 
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                        Isolation valve
                                - 
                                    Patent number 4,144,902
                                
- 
                                    Issue date Mar 20, 1979
                                
 
                                - 
                                         S.A. des Anciens Etablissements Paul Wurth S.A. des Anciens Etablissements Paul Wurth
- 
                                         Rene N. Mahr Rene N. Mahr
 
                                - 
                                         F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT... F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
 
 
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                        3892257
                                - 
                                    Patent number 3,892,257
                                
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                                    Issue date Jul 1, 1975
                                
 
                                - 
                                         E03 - WATER SUPPLY SEWERAGE E03 - WATER SUPPLY SEWERAGE
 
 
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                        3566908
                                - 
                                    Patent number 3,566,908
                                
- 
                                    Issue date Mar 2, 1971
                                
 
                                - 
                                         C21 - METALLURGY OF IRON C21 - METALLURGY OF IRON
 
 
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                        3567389
                                - 
                                    Patent number 3,567,389
                                
- 
                                    Issue date Mar 2, 1971
                                
 
                                - 
                                         G05 - CONTROLLING REGULATING G05 - CONTROLLING REGULATING
 
 
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                        3554558
                                - 
                                    Patent number 3,554,558
                                
- 
                                    Issue date Jan 12, 1971
                                
 
                                - 
                                         F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT... F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
 
 
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                        3110319
                                - 
                                    Patent number 3,110,319
                                
- 
                                    Issue date Nov 12, 1963
                                
 
                                - 
                                         F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT... F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
 
 
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                        3098497
                                - 
                                    Patent number 3,098,497
                                
- 
                                    Issue date Jul 23, 1963
                                
 
                                - 
                                         F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT... F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
 
 
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                        3003408
                                - 
                                    Patent number 3,003,408
                                
- 
                                    Issue date Oct 10, 1961
                                
 
                                - 
                                         F24 - HEATING RANGES VENTILATING F24 - HEATING RANGES VENTILATING
 
 
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                        2945504
                                - 
                                    Patent number 2,945,504
                                
- 
                                    Issue date Jul 19, 1960
                                
 
                                - 
                                         F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT... F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
 
 
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                        2942615
                                - 
                                    Patent number 2,942,615
                                
- 
                                    Issue date Jun 28, 1960
                                
 
                                - 
                                         F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT... F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
 
 
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                        2864397
                                - 
                                    Patent number 2,864,397
                                
- 
                                    Issue date Dec 16, 1958
                                
 
                                - 
                                         B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
 
 
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                        2848011
                                - 
                                    Patent number 2,848,011
                                
- 
                                    Issue date Aug 19, 1958
                                
 
                                - 
                                         F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT... F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
 
 
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                        2821504
                                - 
                                    Patent number 2,821,504
                                
- 
                                    Issue date Jan 28, 1958
                                
 
                                - 
                                         F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT... F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
 
 
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                        2811980
                                - 
                                    Patent number 2,811,980
                                
- 
                                    Issue date Nov 5, 1957
                                
 
                                - 
                                         F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT... F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
 
 
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                        2770315
                                - 
                                    Patent number 2,770,315
                                
- 
                                    Issue date Nov 13, 1956
                                
 
                                - 
                                         E03 - WATER SUPPLY SEWERAGE E03 - WATER SUPPLY SEWERAGE
 
 
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                        2715909
                                - 
                                    Patent number 2,715,909
                                
- 
                                    Issue date Aug 23, 1955
                                
 
                                - 
                                         F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT... F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
 
 
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                        2710625
                                - 
                                    Patent number 2,710,625
                                
- 
                                    Issue date Jun 14, 1955
                                
 
                                - 
                                         F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT... F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
 
 
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                        2704088
                                - 
                                    Patent number 2,704,088
                                
- 
                                    Issue date Mar 15, 1955
                                
 
                                - 
                                         F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT... F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
 
 
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                        2697443
                                - 
                                    Patent number 2,697,443
                                
- 
                                    Issue date Dec 21, 1954
                                
 
                                - 
                                         F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT... F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
 
 
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                        2689580
                                - 
                                    Patent number 2,689,580
                                
- 
                                    Issue date Sep 21, 1954
                                
 
                                - 
                                         F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT... F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...