Eichhorn; Friedrich

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Aachen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Welding apparatus
- Patent number 4,420,676
- Issue date Dec 13, 1983
- Eichhorn; Friedrich
- Peter Hirsch
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method of ensuring the maintenance of constant quality of spot welds
- Patent number 4,329,561
- Issue date May 11, 1982
- Eichhorn; Friedrich
- Rolf Schafer
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Apparatus for welding steel sheets
- Patent number 4,303,822
- Issue date Dec 1, 1981
- Eichhorn; Friedrich
- Peter Hirsch
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method of and apparatus for welding sheet steel panels
- Patent number 4,151,389
- Issue date Apr 24, 1979
- Eichhorn; Friedrich
- Peter Hirsch
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR