Alfred Ludwig

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Winterthur, CH

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for internally weld-cladding pipe elbows
- Patent number 4,253,006
- Issue date Feb 24, 1981
- Sulzer Brothers Limited
- Alfred Ludwig
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method for the fabrication of internally weld-cladded pipe elbows
- Patent number 4,165,245
- Issue date Aug 21, 1979
- Sulzer Brothers Limited
- Alfred Ludwig
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR