Granted Patent
Utility
US 5,886,822 · App. 08/844,098
Image combining system for eyeglasses and face masks
Inventor:
Mark B. Spitzer
Patented Case
View Patent ↗
Granted: Mar 23, 1999
Filed: Apr 18, 1997
Inventor
Mark B. Spitzer
Assignee (at issue)
The Microoptical Corporation
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.