Document Type and Number:
Japanese Patent JPS4719594
Kind Code:
U
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Application Number:
JP111171U
Publication Date:
November 04, 1972
Filing Date:
January 16, 1971
Export Citation:
International Classes:
B21D31/04; B21D28/26; B21D47/00; B21F27/00; (IPC1-7): B21D47/00; B21D28/26; B21F27/00