Fujio Kikuchi

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Katsuta, JP

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Patents Grantslast 30 patents

Information Patent Grant
Rare earth element-doped optical waveguide and process for producin...
- Patent number 5,206,925
- Issue date Apr 27, 1993
- Hitachi Cable Limited
- Masataka Nakazawa
- C03 - GLASS MINERAL OR SLAG WOOL