Granted Patent
Utility
US 6,795,236 · App. 09/934,308
Cascadable optical amplifier arrangement
Inventor:
Peter Krummrich
Patented Case
View Patent ↗
Granted: Sep 21, 2004
Filed: Aug 20, 2001
Inventor
Peter Krummrich
Assignee (at issue)
Siemens Aktiengesellschaft
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.