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Dual-action vent check valve
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Patent number 6,848,465
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Issue date Feb 1, 2005
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Robert H. Wager Co., Inc.
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Jonathan T. Ledbetter
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Liquid flow control device
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Patent number 5,613,513
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Issue date Mar 25, 1997
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Val-Matic Valve & Mfg. Corporation
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Ted J. Makowan
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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3858603
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Patent number 3,858,603
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Issue date Jan 7, 1975
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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3542059
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Patent number 3,542,059
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Issue date Nov 24, 1970
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E04 - BUILDING
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3166083
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Patent number 3,166,083
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Issue date Jan 19, 1965
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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2989752
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Patent number 2,989,752
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Issue date Jun 27, 1961
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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2867231
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Patent number 2,867,231
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Issue date Jan 6, 1959
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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2851259
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Patent number 2,851,259
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Issue date Sep 9, 1958
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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2811219
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Patent number 2,811,219
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Issue date Oct 29, 1957
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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2801644
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Patent number 2,801,644
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Issue date Aug 6, 1957
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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2783523
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Patent number 2,783,523
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Issue date Mar 5, 1957
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2719596
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Patent number 2,719,596
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Issue date Oct 4, 1955
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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2671527
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Patent number 2,671,527
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Issue date Mar 9, 1954
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E03 - WATER SUPPLY SEWERAGE
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2633131
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Patent number 2,633,131
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Issue date Mar 31, 1953
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2568474
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Patent number 2,568,474
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Issue date Sep 18, 1951
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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2449134
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Patent number 2,449,134
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Issue date Sep 14, 1948
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E03 - WATER SUPPLY SEWERAGE
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2408166
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Patent number 2,408,166
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Issue date Sep 24, 1946
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT