TREA

Hiromi Ohta

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  • Hamakita, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Filter element and method for producing the same
    • Patent number 5,273,560
    • Issue date Dec 28, 1993
    • Toyo Roki Seizo Kabushiki Kaisha
    • Teruichi Kadoya
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL