Risto Pennanen

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Helsinki, FI

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for cooling an optical fiber
- Patent number 4,966,615
- Issue date Oct 30, 1990
- Oy Nokia AB
- Antti Linden
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method of and a device for applying a primary coating to an optical...
- Patent number 4,713,103
- Issue date Dec 15, 1987
- Oy Nokia AB
- Risto Pennanen
- C03 - GLASS MINERAL OR SLAG WOOL