Granted Patent
Utility
US 4,192,191 · App. 05/959,314
Pressure sensor
Inventor:
Robert Leonard Nelson, Jr.
Patented Case
View Patent ↗
Granted: Mar 11, 1980
Filed: Nov 9, 1978
Inventor
Robert Leonard Nelson, Jr.
Assignee (at issue)
Tracor, 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.