TREA

Fumio Tsutsumi

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  • Takasaki, JA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Pulse counting circuit
    • Patent number 4,087,649
    • Issue date May 2, 1978
    • Nippon Tsu Shin Kogyo K.K.
    • Stephen E. Kerman
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Key telephone intercom line system
    • Patent number 4,081,624
    • Issue date Mar 28, 1978
    • Nippon Tsu Shin Kogyo K.K.
    • Stephen E. Kerman
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE