Granted Patent
Utility
US 4,860,294 · App. 07/173,718
Integrated-optical arrangement for bidirectional optical message or signal transmission
Inventors:
Gerhard Winzer, Reinhard Maerz, Lothar Stoll
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: Mar 25, 1988
Inventors
Gerhard Winzer
Reinhard Maerz
Lothar Stoll
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.