Air percussion hammer for directional drilling operations
A Standard patent application filed on 06 July 1993 credited to Johns, Roger P.
;
Bui, Huy D.
;
Oliver, Michael S.
Details
Application number :
41789
Application type :
Standard
Application status :
SEALED
Under opposition :
No
Proceeding type :
Invention title :
Air percussion hammer for directional drilling operations
Inventor :
Johns, Roger P.
;
Bui, Huy D.
;
Oliver, Michael S.
Agent name :
FB Rice
Address for service :
Level 23 44 Market Street SYDNEY NSW 2000
Filing date :
06 July 1993
Associated companies :
Applicant name :
Smith International, Inc.
Applicant address :
16740 Hardy Street Houston Texas 77032 United States Of America