Granted Patent
Utility
US 4,748,992 · App. 06/836,804
Contact lens disinfection
Inventor:
Gunter Giefer
Patented Case
View Patent ↗
Granted: Jun 7, 1988
Filed: Mar 6, 1986
Inventor
Gunter Giefer
Assignee (at issue)
Ciba Vision Care 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.