Granted Patent
Utility
US 5,661,402 · App. 08/632,646
Sealed modular downhole antenna
Inventors:
Dennis Patrick Chesnutt, Kenneth H. Hamlin, Paul L. Sinclair
Patented Case
View Patent ↗
Granted: Aug 26, 1997
Filed: Apr 15, 1996
Inventors
Dennis Patrick Chesnutt
Kenneth H. Hamlin
Paul L. Sinclair
Assignee (at issue)
Halliburton Energy Services, 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.