TREA

Kabushiki Kaisha Duct Sangyo

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  • Osaka, JP
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  • Information Patent Grant

    Method of making a curved pipe
    • Patent number 5,014,424
    • Issue date May 14, 1991
    • Kabushiki Kaisha Okada Seisakusho
    • Tamotsu Takasugi
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

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