Granted Patent
Utility
US 6,795,606 · App. 09/957,367
Optical ADD-DROP module which can be expanded modularly
Inventors:
Christian Dobler, Patrick Leisching
Patented Case
View Patent ↗
Granted: Sep 21, 2004
Filed: Sep 20, 2001
Inventors
Christian Dobler
Patrick Leisching
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.