Granted Patent
Utility
US 5,790,314 · App. 08/791,325
Grin lensed optical device
Inventors:
Gary S. Duck, Yihao Cheng
Patented Case
View Patent ↗
Granted: Aug 4, 1998
Filed: Jan 31, 1997
Inventors
Gary S. Duck
Yihao Cheng
Assignee (at issue)
JDS Fitel Inc.
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.