Granted Patent
Utility
US 5,850,491 · App. 08/794,739
Double-stage acousto-optical waveguide device, having polarization-independent response
Inventors:
Salvatore Morasca, Steffen Schmid
Patented Case
View Patent ↗
Granted: Dec 15, 1998
Filed: Feb 3, 1997
Inventors
Salvatore Morasca
Steffen Schmid
Assignee (at issue)
Pirelli Cavi S.p.A.
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.