Document Type and Number:
Japanese Patent JPS5137857
Kind Code:
Y2
Application Number:
JP185473U
Publication Date:
September 17, 1976
Filing Date:
December 30, 1972
Export Citation:
International Classes:
E01C11/22; E01F9/524; E01F9/535; E01F9/541; E01F9/553; E01F9/576; (IPC1-7): E01C11/22