Granted Patent
Utility
US 6,693,499 · App. 10/114,166
Compact lumped element ring balun layout
Inventors:
William R. Goyette, Karl D. Peterschmidt, Trung H. Lam
Patented Case
View Patent ↗
Granted: Feb 17, 2004
Filed: Apr 2, 2002
Inventors
William R. Goyette
Karl D. Peterschmidt
Trung H. Lam
Assignee (at issue)
NORTHROP GRUMMAN 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.