Granted Patent
Utility
US 5,900,989 · App. 08/908,118
Mini-zoom projection lenses for use with pixelized panels
Inventor:
Melvyn H. Kreitzer
Patented Case
View Patent ↗
Granted: May 4, 1999
Filed: Aug 11, 1997
Inventor
Melvyn H. Kreitzer
Assignee (at issue)
U.S. Precision Lens Incorporated
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.