Document Type and Number:
Japanese Patent JPH0230098
Kind Code:
Y2
Application Number:
JP3827885U
Publication Date:
August 14, 1990
Filing Date:
March 19, 1985
Export Citation:
International Classes:
B23P23/02; B09B3/00; B21D28/28; B23P23/04; E21B29/00; (IPC1-7): B21D28/28; B09B3/00; B23P23/02; E21B29/00
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