Document Type and Number:
Japanese Patent JPS4874502
Kind Code:
U
Application Number:
JP11987971U
Publication Date:
September 17, 1973
Filing Date:
December 18, 1971
Export Citation:
International Classes:
E02F7/04; E01B27/02; E01B27/04; E02F3/76; E02F7/00; (IPC1-7): E02F7/00; E01B27/02; E02F3/76