Document Type and Number:
Japanese Patent JPS5513441
Kind Code:
Y2
Application Number:
JP13759274U
Publication Date:
March 26, 1980
Filing Date:
November 15, 1974
Export Citation:
International Classes:
E01C3/00; E01C1/00; E01C3/04; E01C7/08; E01C11/22; (IPC1-7): E01C7/08