Granted Patent
Utility
US 5,206,871 · App. 07/815,311
Optical devices with electron-beam evaporated multilayer mirror
Inventors:
Dennis G. Deppe, Niloy K. Dutta, Erdmann F. Schubert, Li-Wei Tu, George J. Zydzik
Patented Case
View Patent ↗
Granted: Apr 27, 1993
Filed: Dec 27, 1991
Inventors
Dennis G. Deppe
Niloy K. Dutta
Erdmann F. Schubert
Li-Wei Tu
George J. Zydzik
Assignee (at issue)
AT&T Bell Laboratories
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.