Document Type and Number:
Japanese Patent JPS56169923
Kind Code:
U
Application Number:
JP6650880U
Publication Date:
December 15, 1981
Filing Date:
May 15, 1980
Export Citation:
International Classes:
B21D19/08; B21D5/01; B21D19/12; C25C7/02; (IPC1-7): B21D19/12; B21D5/01; C25C7/02