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Model submarine
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Patent number 4,919,637
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Issue date Apr 24, 1990
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Leonard Bloom
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Lewis W. Fleischmann
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A63 - SPORTS GAMES AMUSEMENTS
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Model submarine
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Patent number 4,826,465
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Issue date May 2, 1989
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Bloom; Leonard
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Lewis W. Fleischmann
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Pressure sensor apparatus
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Patent number 4,006,735
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Issue date Feb 8, 1977
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Hittman Corporation
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Fred Hittman
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Pressure sensor apparatus
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Patent number 3,977,391
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Issue date Aug 31, 1976
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Hittman Corporation
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Lewis Fleischmann
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE