Granted Patent
Utility
US 5,774,485 · App. 08/714,852
Wavelength-tunable laser device
Inventor:
Karl-Ulrich Stein
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Sep 17, 1996
Inventor
Karl-Ulrich Stein
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.