Granted Patent
Utility
US 4,725,914 · App. 06/942,334
Protective relay system for performing selective-pole trip determination
Inventor:
James P. Garitty
Patented Case
View Patent ↗
Granted: Feb 16, 1988
Filed: Dec 16, 1986
Inventor
James P. Garitty
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.