Document Type and Number:
Japanese Patent JPH0223603
Kind Code:
Y2
Application Number:
JP19553584U
Publication Date:
June 27, 1990
Filing Date:
December 24, 1984
Export Citation:
International Classes:
E01C5/06; E01C3/00; E01C7/10; (IPC1-7): E01C3/00; E01C5/06
Next Patent: JPH0223604