Martin Kaul

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CH-5454 Bellikon, CH

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Patents Grantslast 30 patents

Information Patent Grant
Method and machine for electrical resistance roll seam welding with...
- Patent number 4,536,636
- Issue date Aug 20, 1985
- Opprecht; Paul
- Paul Opprecht
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Apparatus and method to suppress oxidation during resistance welding
- Patent number 4,493,962
- Issue date Jan 15, 1985
- Wolfgang Weil
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Apparatus to suppress oxidation during resistance welding
- Patent number 4,395,614
- Issue date Jul 26, 1983
- Opprecht; Paul
- Wolfgang Weil
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method and apparatus for seam welding overlapped edges
- Patent number 4,160,892
- Issue date Jul 10, 1979
- Opprecht; Paul
- Paul Opprecht
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR