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Device for producing humus
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Patent number 9,981,885
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Issue date May 29, 2018
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Willibald Hageneder
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C05 - FERTILISERS MANUFACTURE THEREOF
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3341301
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Patent number 3,341,301
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Issue date Sep 12, 1967
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C05 - FERTILISERS MANUFACTURE THEREOF
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2695218
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Patent number 2,695,218
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Issue date Nov 23, 1954
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C05 - FERTILISERS MANUFACTURE THEREOF
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2655434
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Patent number 2,655,434
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Issue date Oct 13, 1953
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C05 - FERTILISERS MANUFACTURE THEREOF
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1900615
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Patent number 1,900,615
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Issue date Mar 7, 1933
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C05 - FERTILISERS MANUFACTURE THEREOF