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Treatment of phosphoric acid
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Patent number 4,248,843
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Issue date Feb 3, 1981
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Triomf Fertilizer (Proprietary) Ltd.
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Charles S. Williams
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C05 - FERTILISERS MANUFACTURE THEREOF
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3582311
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Patent number 3,582,311
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Issue date Jun 1, 1971
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C05 - FERTILISERS MANUFACTURE THEREOF
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3544301
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Patent number 3,544,301
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Issue date Dec 1, 1970
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C05 - FERTILISERS MANUFACTURE THEREOF
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3383167
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Patent number 3,383,167
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Issue date May 14, 1968
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C05 - FERTILISERS MANUFACTURE THEREOF
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3320048
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Patent number 3,320,048
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Issue date May 16, 1967
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C05 - FERTILISERS MANUFACTURE THEREOF
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3285731
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Patent number 3,285,731
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Issue date Nov 15, 1966
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C05 - FERTILISERS MANUFACTURE THEREOF
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3194632
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Patent number 3,194,632
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Issue date Jul 13, 1965
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C05 - FERTILISERS MANUFACTURE THEREOF
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2782113
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Patent number 2,782,113
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Issue date Feb 19, 1957
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C05 - FERTILISERS MANUFACTURE THEREOF
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2213514
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Patent number 2,213,514
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Issue date Sep 3, 1940
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C05 - FERTILISERS MANUFACTURE THEREOF
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2213513
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Patent number 2,213,513
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Issue date Sep 3, 1940
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C05 - FERTILISERS MANUFACTURE THEREOF