Granted Patent
Utility
US 6,687,445 · App. 09/888,916
Double-clad optical fiber for lasers and amplifiers
Inventors:
Adrian Carter, Kanishka Tankala, Martin Seifert
Patented Case
View Patent ↗
Granted: Feb 3, 2004
Filed: Jun 25, 2001
Inventors
Adrian Carter
Kanishka Tankala
Martin Seifert
Assignee (at issue)
Nufern
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.