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Passive pressure activation valve
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Patent number 7,543,601
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Issue date Jun 9, 2009
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Continental Automotive Canada, Inc.
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Gilles Delaire
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Passive pressure activation valve
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Patent number 7,490,624
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Issue date Feb 17, 2009
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Continental Automotive Canada, Inc.
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Gilles Delaire
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Waste trap
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Patent number 7,155,760
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Issue date Jan 2, 2007
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McAlpine & Company Limited
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James Kenneth McAlpine
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Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
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Liquid column pressure and vacuum vent
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Patent number 6,973,938
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Issue date Dec 13, 2005
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Husky Corporation
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Thomas O. Mitchell
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Sewerage inlet
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Patent number 6,192,915
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Issue date Feb 27, 2001
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Antonius Valperz
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E03 - WATER SUPPLY SEWERAGE
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Drain trap apparatus
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Patent number 5,941,273
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Issue date Aug 24, 1999
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Svetozar Petrovich
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E03 - WATER SUPPLY SEWERAGE
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Liquid closing device
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Patent number 4,681,131
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Issue date Jul 21, 1987
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Jose I. Uriarte
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E03 - WATER SUPPLY SEWERAGE
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Water seal drum
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Patent number 4,655,242
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Issue date Apr 7, 1987
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JGC Corporation
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Takeru Hamazaki
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Sink trap assembly
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Patent number 4,594,740
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Issue date Jun 17, 1986
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Antoine Tseronakis
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E03 - WATER SUPPLY SEWERAGE
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Sewer fluid trap
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Patent number 4,432,384
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Issue date Feb 21, 1984
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Marcel Guiboro
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E03 - WATER SUPPLY SEWERAGE
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Siphon
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Patent number 4,158,897
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Issue date Jun 26, 1979
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Michel Cocherel
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E03 - WATER SUPPLY SEWERAGE
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3651826
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Patent number 3,651,826
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Issue date Mar 28, 1972
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E03 - WATER SUPPLY SEWERAGE
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3590606
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Patent number 3,590,606
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Issue date Jul 6, 1971
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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3513870
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Patent number 3,513,870
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Issue date May 26, 1970
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C21 - METALLURGY OF IRON
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2891607
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Patent number 2,891,607
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Issue date Jun 23, 1959
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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2889847
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Patent number 2,889,847
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Issue date Jun 9, 1959
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E03 - WATER SUPPLY SEWERAGE
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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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2770314
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Patent number 2,770,314
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Issue date Nov 13, 1956
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E03 - WATER SUPPLY SEWERAGE
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2564172
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Patent number 2,564,172
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Issue date Aug 14, 1951
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2485115
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Patent number 2,485,115
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Issue date Oct 18, 1949
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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2472322
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Patent number 2,472,322
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Issue date Jun 7, 1949
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E03 - WATER SUPPLY SEWERAGE
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2401012
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Patent number 2,401,012
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Issue date May 28, 1946
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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2382912
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Patent number 2,382,912
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Issue date Aug 14, 1945
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E03 - WATER SUPPLY SEWERAGE