Document Type and Number:
Japanese Patent JPS5137858
Kind Code:
Y2
Application Number:
JP417573U
Publication Date:
September 17, 1976
Filing Date:
December 25, 1972
Export Citation:
International Classes:
E03F5/20; E01C3/00; E01C11/22; E03F3/04; E03F5/02; E03F5/04; E03F5/10; (IPC1-7): E01C3/00; E03F5/04