Granted Patent
Utility
US 4,841,271 · App. 07/002,161
Trip-free resetting mechanism for an on-off unit
Inventor:
Robert F. Purssell
Patented Case
View Patent ↗
Granted: Jun 20, 1989
Filed: Jan 12, 1987
Inventor
Robert F. Purssell
Assignee (at issue)
Ranco Incorporated of Delaware
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.