Document Type and Number:
Japanese Patent JPH01174451
Kind Code:
U
Application Number:
JP6920388U
Publication Date:
December 12, 1989
Filing Date:
May 24, 1988
Export Citation:
International Classes:
E02F3/40; B25D9/02; (IPC1-7): E02F3/40; B25D9/02
Domestic Patent References:
| JPS5017001A | 1975-02-22 | |||
| JP50119432B |