Granted Patent
Utility
US 5,973,936 · App. 09/213,725
Current-voltage regulator
Inventors:
Michael Lenz, Frank-Lothar Schwertlein
Patented Case
View Patent ↗
Granted: Oct 26, 1999
Filed: Dec 17, 1998
Inventors
Michael Lenz
Frank-Lothar Schwertlein
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.