Helmut Blume

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Muehlheim, DE

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Patents Grantslast 30 patents

Information Patent Grant
Covering a steel pipe having a welding seam with a thermoplastic co...
- Patent number 4,287,223
- Issue date Sep 1, 1981
- Mannesmann Aktiengesellschaft
- Karl-Heinz Hackert
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL