Granted Patent
Utility
US 4,451,630 · App. 06/505,419
Hydrogel contact lenses for permanent wear
Inventors:
Ivor B. Atkinson, Barry C. Holdstock
Patented Case
View Patent ↗
Granted: May 29, 1984
Filed: Jun 16, 1983
Inventors
Ivor B. Atkinson
Barry C. Holdstock
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.