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Self-purging in-line filter
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Patent number 6,241,878
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Issue date Jun 5, 2001
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Alvin A. Snaper
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Pedia-cadio pump
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Patent number 6,042,347
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Issue date Mar 28, 2000
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Frank G. Scholl
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Bio-operable power source
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Patent number 5,431,694
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Issue date Jul 11, 1995
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Alvin A. Snaper
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Water-actuated novelty
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Patent number 4,986,531
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Issue date Jan 22, 1991
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Alvin A. Snaper
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Fluidially controlled fuel system
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Patent number 4,570,597
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Issue date Feb 18, 1986
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Alvin A. Snaper
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Fluidic matrix printer
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Patent number 4,435,719
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Issue date Mar 6, 1984
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Alvin A. Snaper
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS