Granted Patent
Utility
US 5,684,680 · App. 08/576,825
Extended range switch mode power supply
Inventors:
Bishara Tahhan, Alfred H. Barrett
Patented Case
View Patent ↗
Granted: Nov 4, 1997
Filed: Dec 21, 1995
Inventors
Bishara Tahhan
Alfred H. Barrett
Assignee (at issue)
DELCO ELECTRONICS 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.