Granted Patent
Utility
US 4,528,611 · App. 06/468,742
Relay for pilot protection of electrical power lines
Inventor:
Eric A. Udren
Patented Case
View Patent ↗
Granted: Jul 9, 1985
Filed: Feb 22, 1983
Inventor
Eric A. Udren
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.