Document Type and Number:
Japanese Patent JPS5626042
Kind Code:
Y2
Application Number:
JP5583275U
Publication Date:
June 19, 1981
Filing Date:
April 25, 1975
Export Citation:
International Classes:
E02F3/02; B25D3/00; E02F5/20; E04H12/34; E21B1/02; (IPC1-7): E02F5/20; B25D3/00