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Attached growth biological reactor
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Patent number 5,246,854
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Issue date Sep 21, 1993
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The United States of America as represented by the Secretary of Agriculture
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Dennis J. O'Brien
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C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
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Hide transfer apparatus
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Patent number 4,550,905
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Issue date Nov 5, 1985
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The United States of America as represented by the Secretary of Agriculture
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Wolfgang K. Heiland
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C14 - SKINS HIDES PELTS LEATHER
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Automatic hide processing apparatus
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Patent number 4,478,328
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Issue date Oct 23, 1984
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The United States of America as represented by the Secretary of Agriculture
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Wolfgang K. Heiland
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C14 - SKINS HIDES PELTS LEATHER
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Doctoring and drying method
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Patent number 4,031,252
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Issue date Jun 21, 1977
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The United States of America as represented by the Secretary of Agriculture
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John F. Sullivan
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F26 - DRYING