Granted Patent
Utility
US 5,963,375 · App. 08/788,207
Athermal LCD projection lens
Inventor:
Melvyn H. Kreitzer
Patented Case
View Patent ↗
Granted: Oct 5, 1999
Filed: Jan 24, 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.