Yuji Tanaka

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Kawasaki, JA

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Patents Grantslast 30 patents

Information Patent Grant
Control circuitry for key telephone apparatus
- Patent number 4,081,625
- Issue date Mar 28, 1978
- Nippon Tsu Shin Kogyo K.K.
- Fumikazu Hamatani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Bipolar charging and discharging circuit
- Patent number 4,054,804
- Issue date Oct 18, 1977
- Nippon Tsu Shin Kogyo K.K.
- Yuji Tanaka
- H03 - BASIC ELECTRONIC CIRCUITRY