Hartmut Wellershaus

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Wassenach, DT

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Patents Grantslast 30 patents

Information Patent Grant
Braced girder of triangular section
- Patent number 3,930,349
- Issue date Jan 6, 1976
- Rheinische Filigranbau GmbH & Co. KG
- Hartmut Wellershaus
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...