Document Type and Number:
Japanese Patent JPS517152
Kind Code:
B2
Application Number:
JP6087771A
Publication Date:
March 05, 1976
Filing Date:
August 10, 1971
Export Citation:
International Classes:
B21D9/00; B21D9/04; B21D9/08; B21D31/04; (IPC1-7): B21D9/04; B21D31/04