Granted Patent
Utility
US 5,337,185 · App. 07/945,754
Three dimensional diffraction grating and crystal filter
Inventors:
Joseph F. Meier, Nathan T. Melamed
Patented Case
View Patent ↗
Granted: Aug 9, 1994
Filed: Sep 16, 1992
Inventors
Joseph F. Meier
Nathan T. Melamed
Assignee (at issue)
Westinghouse Electric Company LLC
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.