Granted Patent
Utility
US 4,225,846 · App. 06/008,601
Shaft locking mechanism having combination switch and variable resistor
Inventor:
Ellis P. Lipp
Patented Case
View Patent ↗
Granted: Sep 30, 1980
Filed: Feb 1, 1979
Inventor
Ellis P. Lipp
Assignee (at issue)
Emhart Industries, 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.