Granted Patent
Utility
US 6,125,228 · App. 09/035,236
Apparatus for beam splitting, combining wavelength division multiplexing and demultiplexing
Inventor:
Qian Gong
Patented Case
View Patent ↗
Granted: Sep 26, 2000
Filed: Mar 4, 1998
Inventor
Qian Gong
Assignee (at issue)
Swales Aerospace
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.