Document Type and Number:
Japanese Patent JPS56168547
Kind Code:
U
Application Number:
JP6386880U
Publication Date:
December 12, 1981
Filing Date:
May 12, 1980
Export Citation:
International Classes:
E02D29/12; E01F13/00; E01F15/00; (IPC1-7): E02D29/12; E01F13/00