Document Type and Number:
Japanese Patent JPS52133251
Kind Code:
U
Application Number:
JP4156076U
Publication Date:
October 11, 1977
Filing Date:
April 06, 1976
Export Citation:
International Classes:
E01C19/02; E01C19/10; (IPC1-7): E01C19/10
Domestic Patent References:
| JPS5076566U | 1975-07-03 |