Granted Patent
Utility
US 5,115,480 · App. 07/671,453
Optical polarisation state controllers
Inventor:
Timothy Andrew Large
Patented Case
View Patent ↗
Granted: May 19, 1992
Filed: Mar 19, 1991
Inventor
Timothy Andrew Large
Assignee (at issue)
Northern Telecom Europe Limited
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.