TREA

Katsuhiko Okano

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  • Hiroshima, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Braking apparatus for door closer
    • Patent number 4,825,503
    • Issue date May 2, 1989
    • Ryobi Ltd.
    • Miyoshi Shiramasa
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES