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Osamu Yamamoto

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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of making a plastic cap
    • Patent number 4,649,013
    • Issue date Mar 10, 1987
    • Toyo Seikan Kaisha, Limited
    • Osamu Yamamoto
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL