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Document Type and Number:
Japanese Patent JPS4520753
Kind Code:
Application Number:
Publication Date:
August 19, 1970
Filing Date:
September 20, 1965
Export Citation:
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International Classes:
(IPC1-7): B21D19/12; B21D1/02; B21D22/14; B21D22/16; B21D51/18; B21D51/38

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