TREA

Norio Saneyoshi

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Synchronization system for key telephone system
    • Patent number 4,502,138
    • Issue date Feb 26, 1985
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Akiho Doi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Reception system for key telephone system
    • Patent number 4,490,820
    • Issue date Dec 25, 1984
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Akiho Doi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Ringing signal detector
    • Patent number 4,184,053
    • Issue date Jan 15, 1980
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Norio Saneyoshi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE