Document Type and Number:
Japanese Patent JPH02106004
Kind Code:
U
More Like This:
Application Number:
JP1476689U
Publication Date:
August 23, 1990
Filing Date:
February 10, 1989
Export Citation:
International Classes:
E01C3/06; E01C7/30; (IPC1-7): E01C3/06; E01C7/30
Domestic Patent References:
JPS5949361B2 | 1984-12-03 | |||
JPS63268803A | 1988-11-07 |