Granted Patent
Utility
US 5,132,867 · App. 07/473,499
Method and apparatus for transfer bus protection of plural feeder lines
Inventor:
Frank Klancher
Patented Case
View Patent ↗
Granted: Jul 21, 1992
Filed: Feb 1, 1990
Inventor
Frank Klancher
Assignee (at issue)
ABB Power T&D Company Inc.
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.