Granted Patent
Utility
US 6,206,673 · App. 08/454,523
Plastic lens and plastic lens manufacturing system
Inventors:
N. Thornton Lipscomb, Omar M. Buazza
Patented Case
View Patent ↗
Granted: Mar 27, 2001
Filed: May 30, 1995
Inventors
N. Thornton Lipscomb
Omar M. Buazza
Assignee (at issue)
Ophthalmic Research Group International, Inc.
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.