Document Type and Number:
Japanese Patent JPS52129752
Kind Code:
U
Application Number:
JP3846476U
Publication Date:
October 03, 1977
Filing Date:
March 29, 1976
Export Citation:
International Classes:
B21D1/02; B23P9/00; B24B39/00; B24B39/04; (IPC1-7): B24B39/00; B23P9/00