Granted Patent
Utility
US 5,348,087 · App. 07/933,668
Full bore lock system
Inventor:
Jimmie R. Williamson, Jr.
Patented Case
View Patent ↗
Granted: Sep 20, 1994
Filed: Aug 24, 1992
Inventor
Jimmie R. Williamson, Jr.
Assignee (at issue)
Halliburton
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.