Granted Patent
Utility
US 5,235,357 · App. 07/611,259
Spectacle lenses having an inside-out conicoidal front surface and method for forming same
Inventors:
John T. Winthrop, Richard B. Whitney
Patented Case
View Patent ↗
Granted: Aug 10, 1993
Filed: Nov 8, 1990
Inventors
John T. Winthrop
Richard B. Whitney
Assignee (at issue)
American Optical 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.