Granted Patent
Utility
US 4,758,090 · App. 06/911,562
Optical wavelength monitor using blazed diffraction grating
Inventor:
Richard F. Schuma
Patented Case
View Patent ↗
Granted: Jul 19, 1988
Filed: Sep 25, 1986
Inventor
Richard F. Schuma
Assignee (at issue)
AlliedSignal, Inc.
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.