Granted Patent
Utility
US 6,496,613 · App. 09/821,047
Wavelength router
Inventor:
Hideaki Okayama
Patented Case
View Patent ↗
Granted: Dec 17, 2002
Filed: Mar 30, 2001
Inventor
Hideaki Okayama
Assignee (at issue)
OKI ELECTRIC INDUSTRY CO., LTD.
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.