Jaap Karreman

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Enkhuizen, NL

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for the manufacture of molecularly oriented plastic pipes
- Patent number 4,632,656
- Issue date Dec 30, 1986
- Draka Polva B.V.
- Klaas Eygelaar
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL