Granted Patent
Utility
US 4,551,692 · App. 06/594,100
Monolithic polarizer grating
Inventor:
Peter W. Smith
Patented Case
View Patent ↗
Granted: Nov 5, 1985
Filed: Mar 28, 1984
Inventor
Peter W. Smith
Assignee (at issue)
UNITED TECHNOLOGIES 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.