Granted Patent
Utility
US 4,738,331 · App. 06/930,674
Electric motor driven speed control
Inventor:
Neal G. Shields
Patented Case
View Patent ↗
Granted: Apr 19, 1988
Filed: Nov 14, 1986
Inventor
Neal G. Shields
Assignee (at issue)
Specific Cruise Systems, 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.