Granted Patent
Utility
US 6,653,422 · App. 10/350,993
Foldable ophthalmic and otorhinolaryngological device materials
Inventors:
Charles Freeman, Douglas C. Schlueter
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Jan 24, 2003
Inventors
Charles Freeman
Douglas C. Schlueter
Assignee (at issue)
ALCON UNIVERSAL LTD.
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.