Document Type and Number:
Japanese Patent JPS5374972
Kind Code:
U
Application Number:
JP15871076U
Publication Date:
June 22, 1978
Filing Date:
November 26, 1976
Export Citation:
International Classes:
E03F5/04; E01C11/22; E01F5/00; E03F7/00; (IPC1-7): E03F7/00; E01F5/00
Domestic Patent References:
| JPS4833172B1 | 1973-10-12 |