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3400087
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Patent number 3,400,087
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Issue date Sep 3, 1968
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3337671
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Patent number 3,337,671
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Issue date Aug 22, 1967
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3327039
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Patent number 3,327,039
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Issue date Jun 20, 1967
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2879953
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Patent number 2,879,953
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Issue date Mar 31, 1959
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2832096
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Patent number 2,832,096
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Issue date Apr 29, 1958
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2641303
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Patent number 2,641,303
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Issue date Jun 9, 1953
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2550099
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Patent number 2,550,099
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Issue date Apr 24, 1951
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2343747
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Patent number 2,343,747
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Issue date Mar 7, 1944
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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1797193
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Patent number 1,797,193
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Issue date Mar 17, 1931
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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1746701
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Patent number 1,746,701
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Issue date Feb 11, 1930
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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1558804
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Patent number 1,558,804
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Issue date Oct 27, 1925
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL