Granted Patent
Utility
US 5,744,764 · App. 08/720,293
Modular de-energized switch for transformer tap changing
Inventors:
William R. Aschenbrenner, Thomas M. Golner, Shirsh Mehta
Patented Case
View Patent ↗
Granted: Apr 28, 1998
Filed: Sep 26, 1996
Inventors
William R. Aschenbrenner
Thomas M. Golner
Shirsh Mehta
Assignee (at issue)
Federal Signal 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.