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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS545796
Kind Code:
Y2
Application Number:
JP737773U
Publication Date:
March 15, 1979
Filing Date:
January 13, 1973
Export Citation:
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International Classes:
B21C23/21; B21C35/04; B23D33/00; B23D35/00; (IPC1-7): B21C35/04; B23D33/00