Granted Patent
Utility
US 5,485,769 · App. 08/285,093
Square drive adapter
Inventors:
Gene E. Olson, Gerald A. Wridt
Patented Case
View Patent ↗
Granted: Jan 23, 1996
Filed: Aug 3, 1994
Inventors
Gene E. Olson
Gerald A. Wridt
Assignee (at issue)
Snap-on Incorporated
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.