Granted Patent
Utility
US 5,444,669 · App. 07/625,241
Magnetic relative position measuring system
Inventor:
Donald G. Polvani
Patented Case
View Patent ↗
Granted: Aug 22, 1995
Filed: Dec 10, 1990
Inventor
Donald G. Polvani
Assignee (at issue)
Westinghouse Electric Company 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.