Document Type and Number:
Japanese Patent JPS52168431
Kind Code:
U
Application Number:
JP7705176U
Publication Date:
December 21, 1977
Filing Date:
June 15, 1976
Export Citation:
International Classes:
B61J1/10; B61J1/00; E21D9/12; E21F13/02; (IPC1-7): E21D9/12; B61J1/00
Domestic Patent References:
| JP10005174U | ||||
| JP38006654A |