Granted Patent
Utility
US 6,256,007 · App. 09/569,492
Radio communications devices with backlighting circuits having brownout detection circuits responsive to a current through a light emitting diode
Inventors:
Joel James Walukas, John W. Northcutt
Patented Case
View Patent ↗
Granted: Jul 3, 2001
Filed: May 11, 2000
Inventors
Joel James Walukas
John W. Northcutt
Assignee (at issue)
ERICSSON GMBH
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.