Granted Patent
Utility
US 4,206,762 · App. 05/895,956
Telemetric differential pressure sensing method
Inventor:
Eric R. Cosman
Patented Case
View Patent ↗
Granted: Jun 10, 1980
Filed: Apr 13, 1978
Inventor
Eric R. Cosman
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.