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Patent Searching and Data


Document Type and Number:
Japanese Patent JPH022486
Kind Code:
Y2
Application Number:
JP793985U
Publication Date:
January 22, 1990
Filing Date:
January 25, 1985
Export Citation:
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International Classes:
B21C23/30; B21C25/06; B21C29/00; (IPC1-7): B21C25/06