Granted Patent
Utility
US 4,867,533 · App. 06/834,631
Friction lock for optical adjustment
Inventor:
Alfred A. Akin, Jr.
Patented Case
View Patent ↗
Granted: Sep 19, 1989
Filed: Feb 27, 1986
Inventor
Alfred A. Akin, Jr.
Assignee (at issue)
BAUSCH & LOMB 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.