Granted Patent
Utility
US 6,263,198 · App. 08/661,334
Multi-layer printed wiring board having integrated broadside microwave coupled baluns
Inventor:
Frank Li
Patented Case
View Patent ↗
Granted: Jul 17, 2001
Filed: Jun 14, 1996
Inventor
Frank Li
Assignee (at issue)
WJ Communications, 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.