Granted Patent
Utility
US 6,819,092 · App. 10/264,899
Digitally switchable current source
Inventor:
Ernst Bretschneider
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: Oct 4, 2002
Inventor
Ernst Bretschneider
Assignee (at issue)
KONINKLIJKE PHILIPS ELECTRONICS NV
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.