Wolfgang Volmari

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Gernsbach, DE

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Patents Grantslast 30 patents

Information Patent Grant
Counter-rotating compaction head for manufacturing concrete pipes
- Patent number 5,456,590
- Issue date Oct 10, 1995
- Ed. Zublin Aktiengesellschaft
- Wolfgang Volmari
- B28 - WORKING CEMENT, CLAY, OR STONE