Franz-Josef Wichmann

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Friesoythe, DE

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Patents Grantslast 30 patents

Information Patent Grant
Communication cable with strain relief elements applied in the regi...
- Patent number 5,960,144
- Issue date Sep 28, 1999
- Siemens Aktiengesellschaft
- Karl-Heinz Klumps
- G02 - OPTICS
Information Patent Grant
Apparatus and method for producing a metallic tube for light wavegu...
- Patent number 5,857,255
- Issue date Jan 12, 1999
- Siemens Aktiengesellschaft
- Franz-Josef Wichmann
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method and apparatus for producing a metal tube containing a light...
- Patent number 5,815,908
- Issue date Oct 6, 1998
- Siemens Aktiengesellschaft
- Franz-Josef Wichmann
- G02 - OPTICS
Information Patent Grant
Coaxial cable additionally having at least one light waveguide
- Patent number 5,777,260
- Issue date Jul 7, 1998
- Siemens Aktiengesellschaft
- Karl-Heinz Klumps
- G02 - OPTICS