Granted Patent
Utility
US 6,580,552 · App. 09/940,186
Shared pump and serial rare earth doped fiber optical amplifiers
Inventor:
David F. Welch
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Aug 27, 2001
Inventor
David F. Welch
Assignee (at issue)
JDS Uniphase Corporation
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.