Granted Patent
Utility
US 4,581,941 · App. 06/713,167
Combined electronic pressure transducer and power switch
Inventors:
George Obermann, Lui M. Lee
Patented Case
View Patent ↗
Granted: Apr 15, 1986
Filed: Mar 18, 1985
Inventors
George Obermann
Lui M. Lee
Assignee (at issue)
Controls Corporation of America
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.