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Two-stage pressure relief valve
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Patent number 7,165,950
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Issue date Jan 23, 2007
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Bell Helicopter Textron Inc.
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Carlos A. Fenny
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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3035888
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Patent number 3,035,888
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Issue date May 22, 1962
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G05 - CONTROLLING REGULATING
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2775474
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Patent number 2,775,474
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Issue date Dec 25, 1956
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B60 - VEHICLES IN GENERAL
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2461334
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Patent number 2,461,334
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Issue date Feb 8, 1949
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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2376623
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Patent number 2,376,623
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Issue date May 22, 1945
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G05 - CONTROLLING REGULATING
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2059716
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Patent number 2,059,716
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Issue date Nov 3, 1936
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F24 - HEATING RANGES VENTILATING
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1644532
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Patent number 1,644,532
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Issue date Oct 4, 1927
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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1635477
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Patent number 1,635,477
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Issue date Jul 12, 1927
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E03 - WATER SUPPLY SEWERAGE
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1625385
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Patent number 1,625,385
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Issue date Apr 19, 1927
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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1604465
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Patent number 1,604,465
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Issue date Oct 26, 1926
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B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...
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1564430
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Patent number 1,564,430
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Issue date Dec 8, 1925
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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1524739
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Patent number 1,524,739
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Issue date Feb 3, 1925
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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1522300
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Patent number 1,522,300
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Issue date Jan 6, 1925
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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1470235
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Patent number 1,470,235
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Issue date Oct 9, 1923
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B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...
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1240532
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Patent number 1,240,532
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Issue date Sep 18, 1917
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B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...
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1235316
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Patent number 1,235,316
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Issue date Jul 31, 1917
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E03 - WATER SUPPLY SEWERAGE
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1148500
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Patent number 1,148,500
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Issue date Aug 3, 1915
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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1144525
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Patent number 1,144,525
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Issue date Jun 29, 1915
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E03 - WATER SUPPLY SEWERAGE
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1042317
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Patent number 1,042,317
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Issue date Oct 22, 1912
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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1010288
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Patent number 1,010,288
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Issue date Nov 28, 1911
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E03 - WATER SUPPLY SEWERAGE
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923611
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Patent number 923,611
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Issue date Jun 1, 1909
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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904141
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Patent number 904,141
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Issue date Nov 17, 1908
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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899750
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Patent number 899,750
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Issue date Sep 29, 1908
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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897593
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Patent number 897,593
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Issue date Sep 1, 1908
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E03 - WATER SUPPLY SEWERAGE