Granted Patent
Utility
US 4,492,763 · App. 06/395,774
Low dispersion infrared glass
Inventors:
Patrick A. Trotta, Paul A. Zak
Patented Case
View Patent ↗
Granted: Jan 8, 1985
Filed: Jul 6, 1982
Inventors
Patrick A. Trotta
Paul A. Zak
Assignee (at issue)
Texas Instruments 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.