Document Type and Number:
Japanese Patent JPS6345803
Kind Code:
U
Application Number:
JP13660486U
Publication Date:
March 28, 1988
Filing Date:
September 08, 1986
Export Citation:
International Classes:
E01C1/00; (IPC1-7): E01C1/00
Domestic Patent References:
JPS494326A | 1974-01-16 | |||
JPS5037257A | 1975-04-07 | |||
JPS507822B1 | 1975-03-29 |