Granted Patent
Utility
US 6,061,261 · App. 08/712,826
Wall outlet with direct current output
Inventors:
Dao-Long Chen, Daniel L. Ellsworth
Patented Case
View Patent ↗
Granted: May 9, 2000
Filed: Sep 12, 1996
Inventors
Dao-Long Chen
Daniel L. Ellsworth
Assignees (at issue)
Hyundai Electronics America
NCR Corporation
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.