Document Type and Number:
Japanese Patent JPS4872338
Kind Code:
U
Application Number:
JP11941771U
Publication Date:
September 10, 1973
Filing Date:
December 20, 1971
Export Citation:
International Classes:
B21D5/06; B21D5/08; B21D5/14; B21D7/08; B21D11/20; (IPC1-7): B21D5/14; B21D5/06