Granted Patent
Utility
US 4,559,832 · App. 06/534,979
Piezoelectric pressure frequency sensor
Inventors:
Brian J. Burlage, David E. Wiklund, Gary A. Lenz
Patented Case
View Patent ↗
Granted: Dec 24, 1985
Filed: Sep 23, 1983
Inventors
Brian J. Burlage
David E. Wiklund
Gary A. Lenz
Assignee (at issue)
Fisher Controls LLC.
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.