Granted Patent
Utility
US 5,629,995 · App. 08/595,487
Wavelength filter arrangements for use in fiber optics
Inventors:
Gary S. Duck, Yihao Cheng
Patented Case
View Patent ↗
Granted: May 13, 1997
Filed: Feb 1, 1996
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.