Granted Patent
Utility
US 5,088,809 · App. 07/690,814
Teledioptric lens system
Inventor:
Valdemar Portney
Patented Case
View Patent ↗
Granted: Feb 18, 1992
Filed: Apr 23, 1991
Inventor
Valdemar Portney
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.