Granted Patent
Utility
US 5,689,324 · App. 07/932,812
Progressive lens
Inventors:
Loren C. Lossman, Larry H. Joel, James S. Carr
Patented Case
View Patent ↗
Granted: Nov 18, 1997
Filed: Aug 18, 1992
Inventors
Loren C. Lossman
Larry H. Joel
James S. Carr
Assignee (at issue)
Q2100, 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.