Granted Patent
Utility
US 4,264,249 · App. 06/069,402
Toric surface generator
Inventor:
W. Clifford Dawson
Patented Case
View Patent ↗
Granted: Apr 28, 1981
Filed: Aug 24, 1979
Inventor
W. Clifford Dawson
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.