Granted Patent
Utility
US 4,833,921 · App. 07/190,700
Gas pressure measurement device
Inventors:
Robert T. Longo, Edward Allen Adler
Patented Case
View Patent ↗
Granted: May 30, 1989
Filed: May 5, 1988
Inventors
Robert T. Longo
Edward Allen Adler
Assignee (at issue)
Hughes Aircraft 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.