Granted Patent
Utility
US 5,357,801 · App. 08/103,636
Liquid-level gauging
Inventor:
David Brent Sinclair
Patented Case
View Patent ↗
Granted: Oct 25, 1994
Filed: Aug 11, 1993
Inventor
David Brent Sinclair
Assignee (at issue)
Smiths Industries Public Limited Company
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.