Granted Patent
Utility
US 5,160,925 · App. 07/686,772
Short hop communication link for downhole MWD system
Inventors:
Patrick E. Dailey, Charles D. Barron, Louis H. Rorden
Patented Case
View Patent ↗
Granted: Nov 3, 1992
Filed: Apr 17, 1991
Inventors
Patrick E. Dailey
Charles D. Barron
Louis H. Rorden
Assignees (at issue)
SMITH INTERNATIONAL, INC.
Develco, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.