Granted Patent
Utility
US 4,646,012 · App. 06/573,459
Digital, electromagnetic rod position indicator with precisely controlled transitions between digital states
Inventors:
Michal M. Feilchenfeld, Charles G. Geis
Patented Case
View Patent ↗
Granted: Feb 24, 1987
Filed: Jan 24, 1984
Inventors
Michal M. Feilchenfeld
Charles G. Geis
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.