Granted Patent
Utility
US 4,611,039 · App. 06/319,193
Wettable, gas permeable contact lens
Inventors:
James Powell, G. Graham Allan
Patented Case
View Patent ↗
Granted: Sep 9, 1986
Filed: Nov 9, 1981
Inventors
James Powell
G. Graham Allan
Assignee (at issue)
Precision-Cosmet Co., Inc.
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.