Granted Patent
Utility
US 4,292,004 · App. 06/047,198
Platform leg plug
Inventor:
Lloyd C. Knox
Patented Case
View Patent ↗
Granted: Sep 29, 1981
Filed: Jun 11, 1979
Inventor
Lloyd C. Knox
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.