Hans Grigull

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Cologne, DT

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Patents Grantslast 30 patents

Information Patent Grant
Production of plastic-filler mixtures
- Patent number 3,969,314
- Issue date Jul 13, 1976
- Leybold-Heraeus GmbH & Co. KG
- Hans Grigull
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL