Granted Patent
Utility
US 4,327,350 · App. 06/058,282
Pressure transducer
Inventor:
Herman W. Erichsen
Patented Case
View Patent ↗
Granted: Apr 27, 1982
Filed: Jul 17, 1979
Inventor
Herman W. Erichsen
Assignee (at issue)
DATAQ Instruments, 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.