Granted Patent
Utility
US 4,815,323 · App. 07/004,750
Ultrasonic fuel quantity gauging system
Inventors:
S. Michael Ellinger, Howard P. Jones
Patented Case
View Patent ↗
Granted: Mar 28, 1989
Filed: Jan 9, 1987
Inventors
S. Michael Ellinger
Howard P. Jones
Assignees (at issue)
Simmonds Precision Products, Inc.
EDO 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.