TREA

Ishizawa; Seiya

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  • Shizuoka, JA
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  • Information Patent Grant

    Method of hardening saw teeth
    • Patent number 4,030,951
    • Issue date Jun 21, 1977
    • Fuji Sangyo Kabushiki Kaisha
    • Toushichi Ishizawa
    • C21 - METALLURGY OF IRON

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