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Check valves
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Patent number 10,648,581
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Issue date May 12, 2020
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Hamilton Sundstrand Corporation
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Zbigniew JaĆkiewicz
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Mechanical draft controller
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Patent number 6,508,246
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Issue date Jan 21, 2003
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Lon W. Fiedler
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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Door for brew kettle
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Patent number 4,599,991
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Issue date Jul 15, 1986
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Miller Brewing Company
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James P. Horton
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Air deflection duct assembly
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Patent number 4,362,091
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Issue date Dec 7, 1982
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Mission Marketing Corp. of Arizona
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Howard W. Cox
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F24 - HEATING RANGES VENTILATING
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Tank wagon
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Patent number 4,350,353
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Issue date Sep 21, 1982
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Cornelis van der Lely
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B60 - VEHICLES IN GENERAL
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Tank wagon
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Patent number 4,331,342
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Issue date May 25, 1982
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Cornelis van der Lely
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B60 - VEHICLES IN GENERAL
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3837268
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Patent number 3,837,268
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Issue date Sep 24, 1974
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F24 - HEATING RANGES VENTILATING
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3825060
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Patent number 3,825,060
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Issue date Jul 23, 1974
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F28 - HEAT EXCHANGE IN GENERAL
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3612099
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Patent number 3,612,099
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Issue date Oct 12, 1971
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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3589394
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Patent number 3,589,394
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Issue date Jun 29, 1971
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F28 - HEAT EXCHANGE IN GENERAL
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3237399
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Patent number 3,237,399
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Issue date Mar 1, 1966
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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3166000
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Patent number 3,166,000
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Issue date Jan 19, 1965
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F24 - HEATING RANGES VENTILATING
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3092138
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Patent number 3,092,138
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E03 - WATER SUPPLY SEWERAGE
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2787288
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Patent number 2,787,288
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F24 - HEATING RANGES VENTILATING
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2711755
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Patent number 2,711,755
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E21 - EARTH DRILLING MINING
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2461304
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Patent number 2,461,304
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2451075
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Patent number 2,451,075
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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2440556
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Patent number 2,440,556
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Issue date Apr 27, 1948
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H01 - BASIC ELECTRIC ELEMENTS
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2358260
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Patent number 2,358,260
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Issue date Sep 12, 1944
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F24 - HEATING RANGES VENTILATING
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2320562
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Patent number 2,320,562
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2302151
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Patent number 2,302,151
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Issue date Nov 17, 1942
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E03 - WATER SUPPLY SEWERAGE
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2302150
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Patent number 2,302,150
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Issue date Nov 17, 1942
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E03 - WATER SUPPLY SEWERAGE
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2271497
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Patent number 2,271,497
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Issue date Jan 27, 1942
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2255682
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Patent number 2,255,682
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Issue date Sep 9, 1941
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES