Granted Patent
Utility
US 4,742,735 · App. 06/250,895
Driver for a lobed collar
Inventor:
Edgar L. Stencel
Patented Case
View Patent ↗
Granted: May 10, 1988
Filed: Apr 3, 1981
Inventor
Edgar L. Stencel
Assignee (at issue)
VSI, LLC
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.