Granted Patent
Utility
US 4,758,448 · App. 06/739,885
Coated ophthalmic lenses and method for coating the same
Inventors:
Timothy C. Sandvig, Dean A. Ersfeld, Eric Berg
Patented Case
View Patent ↗
Granted: Jul 19, 1988
Filed: May 31, 1985
Inventors
Timothy C. Sandvig
Dean A. Ersfeld
Eric Berg
Assignee (at issue)
Signet Armorlite, 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.