TREA

Nippon Tsu Shin Kogyo K.K.

Follow

Organization

  • Kawasaki, JA
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Key telephone call signalling circuit
    • Patent number 4,185,173
    • Issue date Jan 22, 1980
    • Nippon Tsu Shin Kogyo K.K.
    • Stephen E. Kerman
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • 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

    Dial impulse relay circuit
    • Patent number 4,087,644
    • Issue date May 2, 1978
    • Nippon Tsu Shin Kogyo K.K.
    • Fumikazu Hamatani
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • 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

    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
  • 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

Patents Applicationslast 30 patents

Trademarklast 30 trademarks