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3732208
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Patent number 3,732,208
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Issue date May 8, 1973
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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3706730
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Patent number 3,706,730
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Issue date Dec 19, 1972
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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3037017
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Patent number 3,037,017
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Issue date May 29, 1962
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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1815930
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Patent number 1,815,930
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Issue date Jul 28, 1931
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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1753030
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Patent number 1,753,030
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Issue date Apr 1, 1930
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...