Login| Sign Up| Help| Contact|

Patent Searching and Data


Document Type and Number:
Japanese Patent JPH0477689
Kind Code:
U
More Like This:
JP2002536576[Title of Invention] Directional excavation device
JPS59192982[Title of the device] Coupling for drilling Rod
WO/2005/086736PROVIDING A LOCAL RESPONSE TO A LOCAL CONDITION IN AN OIL WELL
Application Number:
JP11848390U
Publication Date:
July 07, 1992
Filing Date:
November 10, 1990
Export Citation:
Click for automatic bibliography generation   Help
International Classes:
E21B17/02; E21B6/00; E21B6/02; E21B17/03; (IPC1-7): E21B17/02; E21B6/00
Domestic Patent References:
JPS60148391U1985-10-02
JPS5178003A1976-07-07



 
Next Patent: CONTROLLING DEVICE FOR INTERFERE REMOVING ANTENNA