Granted Patent
Utility
US 4,288,710 · App. 06/124,193
Drive mechanism
Inventor:
W. Duane Hamilton
Patented Case
View Patent ↗
Granted: Sep 8, 1981
Filed: Feb 25, 1980
Inventor
W. Duane Hamilton
Assignee (at issue)
American Optical Corporation
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.