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Sotosuke Matsumoto

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  • Kawagoe, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Stern tube seal
    • Patent number 4,461,487
    • Issue date Jul 24, 1984
    • Eagle Industry Co., Ltd.
    • Sotosuke Matsumoto
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Stern tube face seal with funnel-shaped packing
    • Patent number 4,429,884
    • Issue date Feb 7, 1984
    • Eagle Industry Co., Ltd.
    • Sotosuke Matsumoto
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT