Granted Patent
Utility
US 4,383,444 · App. 06/141,908
Microprocessor based capacitance level detection system
Inventors:
Norman V. Beaman, Gary B. Sellers
Patented Case
View Patent ↗
Granted: May 17, 1983
Filed: Apr 21, 1980
Inventors
Norman V. Beaman
Gary B. Sellers
Assignee (at issue)
ROBERTSHAW CONTROLS PRIVATE LIMITED
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.