Granted Patent
Utility
US 4,838,682 · App. 07/172,948
Ocular topology system
Inventor:
Vladimir Portnoy
Patented Case
View Patent ↗
Granted: Jun 13, 1989
Filed: Mar 23, 1988
Inventor
Vladimir Portnoy
Assignee (at issue)
Allergan, 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.