Granted Patent
Utility
US 4,978,877 · App. 07/311,323
Mounting device for brushes in a reversible commutator motor
Inventor:
A. J. J. Quirijnen
Patented Case
View Patent ↗
Granted: Dec 18, 1990
Filed: Feb 15, 1989
Inventor
A. J. J. Quirijnen
Assignee (at issue)
Emerson Electric Co.
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.