Document Type and Number:
Japanese Patent JPS4974192
Kind Code:
U
Application Number:
JP11920772U
Publication Date:
June 27, 1974
Filing Date:
October 15, 1972
Export Citation:
International Classes:
E01F9/529; E01F9/506; E01F9/553; E01F9/559; E01F9/608; E01F9/615; G08G1/07; G08G1/09; G09F19/22; (IPC1-7): G08G1/07; E01F9/06; E01F9/10; G08G1/09