Granted Patent
Utility
US 4,599,560 · App. 06/483,465
AC excited transducer having stabilized phase sensitive demodulator circuit
Inventors:
Norman R. Sanford, Gerald L. Tumbush
Patented Case
View Patent ↗
Granted: Jul 8, 1986
Filed: Apr 11, 1983
Inventors
Norman R. Sanford
Gerald L. Tumbush
Assignee (at issue)
Warner & Swasey
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.