Document Type and Number:
Japanese Patent JPH0433755
Kind Code:
U
Application Number:
JP7464890U
Publication Date:
March 19, 1992
Filing Date:
July 12, 1990
Export Citation:
International Classes:
E02F9/00; F16L39/04; (IPC1-7): E02F9/00
Domestic Patent References:
| JPS6360793B2 | 1988-11-25 |