Granted Patent
Utility
US 6,140,886 · App. 09/257,014
Wideband balun for wireless and RF application
Inventors:
Roger A. Fratti, John Wayne Bowen, Melvin West
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Feb 25, 1999
Inventors
Roger A. Fratti
John Wayne Bowen
Melvin West
Assignee (at issue)
LUCENT TECHNOLOGIES INC.
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.