Granted Patent
Utility
US 5,825,520 · App. 08/514,422
Optical demultiplexers with grating reflectors
Inventor:
David R. Huber
Patented Case
View Patent ↗
Granted: Oct 20, 1998
Filed: Aug 11, 1995
Inventor
David R. Huber
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.