Granted Patent
Utility
US 4,555,941 · App. 06/652,854
Capacitance-type material level indicator
Inventors:
George H. Fathauer, Charles F. Hood
Patented Case
View Patent ↗
Granted: Dec 3, 1985
Filed: Sep 21, 1984
Inventors
George H. Fathauer
Charles F. Hood
Assignee (at issue)
Berwind Corporation
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.