Granted Patent
Utility
US 4,335,933 · App. 06/160,395
Fiber optic wavelength demultiplexer
Inventor:
John P. Palmer
Patented Case
View Patent ↗
Granted: Jun 22, 1982
Filed: Jun 16, 1980
Inventor
John P. Palmer
Assignee (at issue)
General Dynamics Corp., Pomona Division
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.