Reverse circulation drilling system with bit locked underreamer arms
A Standard patent application filed on 28 January 1998 credited to Holte, Ardis L.
Details
Application number :
61360
Application type :
Standard
Application status :
CEASED
Under opposition :
No
Proceeding type :
Invention title :
Reverse circulation drilling system with bit locked underreamer arms
Inventor :
Holte, Ardis L.
Agent name :
FB Rice
Address for service :
Level 23 44 Market Street SYDNEY NSW 2000
Filing date :
28 January 1998
Associated companies :
Applicant name :
Holte, Ardis L.
Applicant address :
181 Polk Street Eugene Oregon 97402 United States Of America