Michio Mito

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Kawasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Key telephone system
- Patent number 4,412,102
- Issue date Oct 25, 1983
- Nippon Telegraph & Telephone
- Seiki Ogawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Key telephone system
- Patent number 4,347,409
- Issue date Aug 31, 1982
- Nippon Telegraph & Telephone Public Corporation
- Seiki Ogawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE