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Roll mixing machine and method
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Toyo Sekkei Co., Ltd.
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Mitsumi Wakoh
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2259058
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Patent number 2,259,058
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Issue date Oct 14, 1941
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2212494
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Patent number 2,212,494
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Issue date Aug 27, 1940
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2200875
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Patent number 2,200,875
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Issue date May 14, 1940
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2032073
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Patent number 2,032,073
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Issue date Feb 25, 1936
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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1932200
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Patent number 1,932,200
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Issue date Oct 24, 1933
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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1923027
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Patent number 1,923,027
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Issue date Aug 15, 1933
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL