Granted Patent
Utility
US 5,365,873 · App. 08/139,153
Hydrostatic pressure sensors
Inventor:
Richard I. Wigram
Patented Case
View Patent ↗
Granted: Nov 22, 1994
Filed: Oct 21, 1993
Inventor
Richard I. Wigram
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.