Granted Patent
Utility
US 4,994,749 · App. 07/285,698
Liquid sensor with high sensitivity near empty
Inventors:
Keith Davies, William H. Meise
Patented Case
View Patent ↗
Granted: Feb 19, 1991
Filed: Dec 16, 1988
Inventors
Keith Davies
William H. Meise
Assignee (at issue)
General Electric Company
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.