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Patent Searching and Data


Document Type and Number:
Japanese Patent JPH01151920
Kind Code:
U
Application Number:
JP4306788U
Publication Date:
October 19, 1989
Filing Date:
March 30, 1988
Export Citation:
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International Classes:
B44B5/00; B21D22/02; B21D22/08; B21D31/00; (IPC1-7): B21D31/00; B44B5/00
Domestic Patent References:
JPS61267763A1986-11-27
JPS4931956U1974-03-19



 
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