Granted Patent
Utility
US 4,949,591 · App. 07/390,526
Lever control
Inventor:
David R. Roelle
Patented Case
View Patent ↗
Granted: Aug 21, 1990
Filed: Aug 7, 1989
Inventor
David R. Roelle
Assignee (at issue)
Capro Ltd.
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.