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3901958
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Patent number 3,901,958
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Issue date Aug 26, 1975
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3520834
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Patent number 3,520,834
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Issue date Jul 21, 1970
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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3250731
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Patent number 3,250,731
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Issue date May 10, 1966
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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3250730
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Patent number 3,250,730
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Issue date May 10, 1966
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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3225127
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Patent number 3,225,127
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Issue date Dec 21, 1965
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3168207
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Patent number 3,168,207
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Issue date Feb 2, 1965
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3144493
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Patent number 3,144,493
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Issue date Aug 11, 1964
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3137745
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Patent number 3,137,745
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Issue date Jun 16, 1964
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...