Document Type and Number:
Japanese Patent JPS5037834
Kind Code:
B1
More Like This:
Application Number:
JP8136970A
Publication Date:
December 05, 1975
Filing Date:
September 18, 1970
Export Citation:
International Classes:
B25D9/12; E21B1/26; (IPC1-7): F15B15/20; E21C3/20
Domestic Patent References:
JP42008996A | ||||
JP40288910Y1 | ||||
JP37017621A | ||||
JPS4028891Y1 |