Granted Patent
Utility
US 4,445,362 · App. 06/361,828
Method for measurement of the cavity volume of soft contact lenses and the apparatus for this measuring method
Inventor:
Otto Wichterle
Patented Case
View Patent ↗
Granted: May 1, 1984
Filed: Mar 25, 1982
Inventor
Otto Wichterle
Assignee (at issue)
Ceskoslovenska akademie ved
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.