Document Type and Number:
Japanese Patent JPS4417642
Kind Code:
Y1
Application Number:
JP3514067U
Publication Date:
July 30, 1969
Filing Date:
April 27, 1967
Export Citation:
International Classes:
B23K20/00; B21J7/18; B21J13/02; (IPC1-7): B21J7/18; B21J13/02