TREA

Kabushiki Kaisha Hirai Giken

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Solar energy collecting roof
    • Patent number 4,228,791
    • Issue date Oct 21, 1980
    • Showa Aluminium K.K.
    • Takashi Hirai
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Metal roof construction
    • Patent number 3,969,850
    • Issue date Jul 20, 1976
    • Kabushiki Kaisha Hirai Giken
    • Takashi Hirai
    • E04 - BUILDING

Patents Applicationslast 30 patents

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