Granted Patent
Utility
US 4,832,434 · App. 06/370,576
Network comprising a multitude of optical signal transmission lines connectible to one another via optical mixers
Inventors:
Anton Sauer, Frank Schmidtke, Hans Thinschmidt
Patented Case
View Patent ↗
Granted: May 23, 1989
Filed: Apr 21, 1982
Inventors
Anton Sauer
Frank Schmidtke
Hans Thinschmidt
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.