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Heating system
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Patent number 9,593,857
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Issue date Mar 14, 2017
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ProGreen Labs, LLC
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James H Lau
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F24 - HEATING RANGES VENTILATING
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Multiple chamber pump and method
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Patent number 7,611,333
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Issue date Nov 3, 2009
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Steven M. Harrington
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Dual chamber pump and method
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Patent number 7,007,456
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Issue date Mar 7, 2006
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Steven M. Harrington
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Hot pressure washer
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Patent number 6,085,739
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Issue date Jul 11, 2000
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Jenny Products, Inc.
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Daniel Leiss
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B08 - CLEANING