TREA

Osamu Matsumura

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  • Tanashi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Glass mounting structure for watches
    • Patent number 4,391,534
    • Issue date Jul 5, 1983
    • Citizen Watch Co., Ltd.
    • Osamu Matsumura
    • G04 - HOROLOGY
  • Information Patent Grant

    Solar battery timepiece
    • Patent number 4,276,629
    • Issue date Jun 30, 1981
    • Citizen Watch Company Limited
    • Osamu Matsumura
    • G04 - HOROLOGY
  • Information Patent Grant

    Watchglass fixing structure
    • Patent number 4,234,948
    • Issue date Nov 18, 1980
    • Citizen Watch Co., Ltd.
    • Yasuo Maekawa
    • G04 - HOROLOGY
  • Information Patent Grant

    Fixing structure of back cover for watch
    • Patent number 4,217,752
    • Issue date Aug 19, 1980
    • Citizen Watch Co., Ltd.
    • Osamu Matsumura
    • G04 - HOROLOGY
  • Information Patent Grant

    Solar battery timepiece
    • Patent number 4,165,604
    • Issue date Aug 28, 1979
    • Citizen Watch Co., Ltd.
    • Osamu Matsumura
    • G04 - HOROLOGY
  • Information Patent Grant

    Water-proof watch case
    • Patent number 4,110,970
    • Issue date Sep 5, 1978
    • Citizen Watch Company Limited
    • Masakazu Funazawa
    • G04 - HOROLOGY