Granted Patent
Utility
US 4,293,789 · App. 06/074,387
Dynamoelectric machine brush rigging
Inventor:
Dallas E. King
Patented Case
View Patent ↗
Granted: Oct 6, 1981
Filed: Sep 10, 1979
Inventor
Dallas E. King
Assignee (at issue)
General Motors 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.