Document Type and Number:
Japanese Patent JPH0417726
Kind Code:
B2
Inventors:
SUDO MASAMI
OOKUBO KUNIO
OONEDA NOBORU
OOKUBO KUNIO
OONEDA NOBORU
Application Number:
JP5774688A
Publication Date:
March 26, 1992
Filing Date:
March 10, 1988
Export Citation:
Assignee:
SHOWA ALUMINIUM CO LTD
International Classes:
B21C25/00; B21C25/04; B21D28/34; B21D37/20; B23K20/12
Next Patent: JPH0417727