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3910275
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Patent number 3,910,275
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Issue date Oct 7, 1975
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3380453
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Patent number 3,380,453
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Issue date Apr 30, 1968
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3343539
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Patent number 3,343,539
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Issue date Sep 26, 1967
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3256884
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Patent number 3,256,884
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Issue date Jun 21, 1966
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2712315
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Patent number 2,712,315
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Issue date Jul 5, 1955
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2616422
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Patent number 2,616,422
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Issue date Nov 4, 1952
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2572987
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Patent number 2,572,987
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Issue date Oct 30, 1951
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2572155
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Patent number 2,572,155
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Issue date Oct 23, 1951
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2566632
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Patent number 2,566,632
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Issue date Sep 4, 1951
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2503341
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Patent number 2,503,341
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Issue date Apr 11, 1950
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE