Granted Patent
Utility
US 4,465,958 · App. 06/371,408
Motor speed control circuit
Inventor:
William J. Roberts
Patented Case
View Patent ↗
Granted: Aug 14, 1984
Filed: Apr 26, 1982
Inventor
William J. Roberts
Assignee (at issue)
ALLIED CONSULTING, 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.