Granted Patent
Utility
US 5,887,479 · App. 08/775,642
Liquid-level gauge driver circuit
Inventor:
David F. Swanson
Patented Case
View Patent ↗
Granted: Mar 30, 1999
Filed: Dec 31, 1996
Inventor
David F. Swanson
Assignee (at issue)
STMICROELECTRONICS, INC.
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.