Granted Patent
Utility
US 4,379,893 · App. 06/296,379
Surface-treated soft contact lenses
Inventors:
Mary A. O'Malley, Nancy J. Drake
Patented Case
View Patent ↗
Granted: Apr 12, 1983
Filed: Aug 26, 1981
Inventors
Mary A. O'Malley
Nancy J. Drake
Assignee (at issue)
Diamond Shamrock 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.