Granted Patent
Utility
US 5,146,784 · App. 07/664,320
Sensor for measuring liquid-level changes in storage tanks
Inventors:
Joseph W. Maresca, Jr., James W. Starr, Richard F. Wise
Patented Case
View Patent ↗
Granted: Sep 15, 1992
Filed: Mar 4, 1991
Inventors
Joseph W. Maresca, Jr.
James W. Starr
Richard F. Wise
Assignee (at issue)
VISTA RESEARCH GROUP, LLC
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.