Granted Patent
Utility
US 5,539,850 · App. 08/366,632
Polarization and wavelength independent optical waveguide tap
Inventors:
Charles H. Henry, Ronald Edward Scotti
Patented Case
View Patent ↗
Granted: Jul 23, 1996
Filed: Dec 30, 1994
Inventors
Charles H. Henry
Ronald Edward Scotti
Assignee (at issue)
AT&T CORP.
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.