Document Type and Number:
Japanese Patent JPS5131232
Kind Code:
B1
Application Number:
JP1633671A
Publication Date:
September 06, 1976
Filing Date:
March 22, 1971
Export Citation:
International Classes:
B21J7/16; (IPC1-7): B21J7/16
Domestic Patent References:
| JP45041094A |
Foreign References:
| GB1106852A | 1968-03-20 |