Document Type and Number:
Japanese Patent JPS4839976
Kind Code:
B1
Application Number:
JP6120770A
Publication Date:
November 28, 1973
Filing Date:
July 11, 1970
Export Citation:
International Classes:
C04B14/02; E01C3/00
Other References:
THE JOURNAL OF THE INSTITUTION OF HIGHWAY ENGINEERS#N2=1969