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3807119
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Patent number 3,807,119
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Issue date Apr 30, 1974
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3708945
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Patent number 3,708,945
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Issue date Jan 9, 1973
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3422594
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Patent number 3,422,594
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Issue date Jan 21, 1969
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3399446
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Patent number 3,399,446
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Issue date Sep 3, 1968
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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3269084
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Patent number 3,269,084
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Issue date Aug 30, 1966
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2841937
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Patent number 2,841,937
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Issue date Jul 8, 1958
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL