Granted Patent
Utility
US 5,260,960 · App. 07/872,401
Tunable semiconductor laser on a semi-insulating substrate
Inventors:
Markus-Christian Amann, Stefan Illek, Wolfgang Thulke
Patented Case
View Patent ↗
Granted: Nov 9, 1993
Filed: Apr 23, 1992
Inventors
Markus-Christian Amann
Stefan Illek
Wolfgang Thulke
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.