TREA

Kouichi Watanabe

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  • Aichi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hot water circulating system
    • Patent number 4,921,166
    • Issue date May 1, 1990
    • Toyotomi Kogyo Co., Ltd.
    • Motoki Matsumoto
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Hot water circulating system
    • Patent number 4,915,296
    • Issue date Apr 10, 1990
    • Toyotomi Kogyo Co., Ltd.
    • Motoki Matsumoto
    • F24 - HEATING RANGES VENTILATING