Document Type and Number:
Japanese Patent JPS4980026
Kind Code:
U
Application Number:
JP12254272U
Publication Date:
July 11, 1974
Filing Date:
October 25, 1972
Export Citation:
International Classes:
B21D17/00; B21D5/00; B21D5/01; E04D15/04; E04D15/07; (IPC1-7): E04D15/07