Document Type and Number:
Japanese Patent JPS52169201
Kind Code:
U
Application Number:
JP7705076U
Publication Date:
December 22, 1977
Filing Date:
June 15, 1976
Export Citation:
International Classes:
E01B7/00; B61J1/00; E01B23/06; (IPC1-7): B61J1/00
Domestic Patent References:
| JPS49127305A | 1974-12-05 | |||
| JP10005174U |