Granted Patent
Utility
US 5,713,892 · App. 08/138,552
Method and apparatus for combined cylindrical and spherical eye corrections
Inventor:
John K. Shimmick
Patented Case
View Patent ↗
Granted: Feb 3, 1998
Filed: Oct 15, 1993
Inventor
John K. Shimmick
Assignee (at issue)
VISX, Incorporated
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.