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3111509
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Patent number 3,111,509
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Issue date Nov 19, 1963
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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3110705
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Patent number 3,110,705
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Issue date Nov 12, 1963
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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2793202
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Patent number 2,793,202
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Issue date May 21, 1957
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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2777835
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Patent number 2,777,835
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Issue date Jan 15, 1957
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...