Document Type and Number:
Japanese Patent JPS63130503
Kind Code:
U
Application Number:
JP2293887U
Publication Date:
August 26, 1988
Filing Date:
February 20, 1987
Export Citation:
International Classes:
E01C1/00; E01C9/08; (IPC1-7): E01C9/08; E01C1/00
Domestic Patent References:
| JPS616502B2 | 1986-02-27 | |||
| JP45015546A |