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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5228864
Kind Code:
Y2
Application Number:
JP1708572U
Publication Date:
July 01, 1977
Filing Date:
February 10, 1972
Export Citation:
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International Classes:
B21D45/04; B21J7/02; B21J13/14; (IPC1-7): B21J7/02