Erhard Putzig

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Hanover, DE

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Patents Grantslast 30 patents

Information Patent Grant
Arrangement for dry reconditioning of used foundry sands
- Patent number 5,421,462
- Issue date Jun 6, 1995
- Kunkel-Wagner GmbH & Co. KG
- Hermann Hofbauer
- B22 - CASTING POWDER METALLURGY