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Screw extruders
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Patent number 4,462,692
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Issue date Jul 31, 1984
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Frenkel C-D Aktiengesellschaft
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Paul Meyer
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Mixing apparatus
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Patent number 4,184,772
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Issue date Jan 22, 1980
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Frenkel C-D Aktiengesellschaft
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Paul Meyer
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Mixing apparatus
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Patent number 4,136,969
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Issue date Jan 30, 1979
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Frenkel C-D Aktiengesellschaft
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Paul Meyer
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL