Granted Patent
Utility
US 4,277,708 · App. 06/051,927
Environment and brushes for high-current rotating electrical machinery
Inventors:
Ian R. McNab, Philip Reichner
Patented Case
View Patent ↗
Granted: Jul 7, 1981
Filed: Jun 25, 1979
Inventors
Ian R. McNab
Philip Reichner
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.