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3209748
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Issue date Oct 5, 1965
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2925814
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Issue date Feb 23, 1960
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2860627
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Patent number 2,860,627
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Issue date Nov 18, 1958
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2838992
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Patent number 2,838,992
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Issue date Jun 17, 1958
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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2830578
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Patent number 2,830,578
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Issue date Apr 15, 1958
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2821189
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Patent number 2,821,189
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2764683
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Patent number 2,764,683
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2690178
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2630580
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Patent number 2,630,580
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E03 - WATER SUPPLY SEWERAGE
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2568934
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Issue date Sep 25, 1951
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2532788
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Issue date Dec 5, 1950
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE