Granted Patent
Utility
US 5,892,864 · App. 08/793,297
Optical 1.times.N and N.times.N switching matrix having a tree structure
Inventors:
Lothar Stoll, Meinrad Schienle, Gustav Muller
Patented Case
View Patent ↗
Granted: Apr 6, 1999
Filed: Mar 11, 1997
Inventors
Lothar Stoll
Meinrad Schienle
Gustav Muller
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.