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Gerhard Koslowski
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Huckeswagen, DT
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Apparatus for calibrating an extruded thermoplastic tube
Patent number
4,029,452
Issue date
Jun 14, 1977
Barmag Barmer Maschinenfabrik Aktiengesellschaft
Heinz Schippers
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL