Granted Patent
Utility
US 4,851,770 · App. 07/046,436
Displacement sensor having dual tank circuits
Inventor:
David Fiori, Jr.
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: May 4, 1987
Inventor
David Fiori, Jr.
Assignee (at issue)
Sensor Technologies, 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.