Granted Patent
Utility
US 4,622,500 · App. 06/754,057
Electric motor controller
Inventor:
Frederick T. Budelman, Jr.
Patented Case
View Patent ↗
Granted: Nov 11, 1986
Filed: Jul 11, 1985
Inventor
Frederick T. Budelman, Jr.
Assignee (at issue)
The Machlett Laboratories, 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.