Granted Patent
Utility
US 5,991,089 · App. 09/015,026
Long focal length projection lenses for use with large pixelized panels
Inventor:
Melvyn H. Kreitzer
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Jan 28, 1998
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.