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Vacuum activated power tower
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Patent number 8,544,492
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Issue date Oct 1, 2013
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Alden C. Sprague
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Vacuum activated closed loop system
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Patent number 8,066,027
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Issue date Nov 29, 2011
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Alden C. Sprague
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Filter for a carpet cleaning system
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Patent number 6,669,840
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Issue date Dec 30, 2003
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David O. Burrow
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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Filter for a carpet cleaning system
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Patent number 6,391,208
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Issue date May 21, 2002
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David O. Burrow
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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Liquid dispensing wagon
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Patent number 5,897,038
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Issue date Apr 27, 1999
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Jeff D. Myers
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A63 - SPORTS GAMES AMUSEMENTS
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Siphon alarm and restarting mechanism
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Patent number 5,898,375
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Issue date Apr 27, 1999
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Fluid Dynamic Siphons, Inc.
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Donald J. Patterson
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beverage dispensing machine
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Patent number 4,718,579
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Issue date Jan 12, 1988
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General Foods Corporation
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Deborah S. Brody
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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Flushing siphon
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Patent number 4,625,752
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Issue date Dec 2, 1986
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John A. George
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Roof siphon drain
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Patent number 4,406,300
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Issue date Sep 27, 1983
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Edwin H. Wilson
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Siphonic irrigation apparatus
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Patent number 4,303,092
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Issue date Dec 1, 1981
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John K. Logan
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Reservoir structure
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Patent number 4,232,624
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Issue date Nov 11, 1980
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Ingenieursbureau Marcon (Marine Consultants) B.V.
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Johannes Wipkink
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Siphon apparatus
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Patent number 4,181,142
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Issue date Jan 1, 1980
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John A. George
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Conveyor belt cleaner
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Patent number 4,036,351
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Issue date Jul 19, 1977
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Material Control, Inc.
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Robert C. Reiter
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3782453
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Patent number 3,782,453
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Issue date Jan 1, 1974
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F28 - HEAT EXCHANGE IN GENERAL
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3510884
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Patent number 3,510,884
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Issue date May 12, 1970
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E03 - WATER SUPPLY SEWERAGE