Granted Patent
Utility
US 5,440,416 · App. 08/021,698
Optical network comprising a compact wavelength-dividing component
Inventors:
Leonard G. Cohen, Charles H. Henry, Rudolf F. Kazarinov, Henry H. Yaffe
Patented Case
View Patent ↗
Granted: Aug 8, 1995
Filed: Feb 24, 1993
Inventors
Leonard G. Cohen
Charles H. Henry
Rudolf F. Kazarinov
Henry H. Yaffe
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.