Granted Patent
Utility
US 4,946,452 · App. 07/267,526
Ocular treatment apparatus
Inventor:
Daniel Py
Patented Case
View Patent ↗
Granted: Aug 7, 1990
Filed: Nov 4, 1988
Inventor
Daniel Py
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.