Granted Patent
Utility
US 4,465,794 · App. 06/345,801
Hydrophilic polymers and contact lenses therefrom
Inventor:
Petr Kuzma
Patented Case
View Patent ↗
Granted: Aug 14, 1984
Filed: Feb 4, 1982
Inventor
Petr Kuzma
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.