Granted Patent
Utility
US 5,048,049 · App. 07/629,017
Turnable distributed feedback-laser
Inventor:
Markus-Christian Amann
Patented Case
View Patent ↗
Granted: Sep 10, 1991
Filed: Dec 18, 1990
Inventor
Markus-Christian Amann
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.