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