Granted Patent
Utility
US 6,664,868 · App. 10/025,394
Shim-tuned coaxial cable impedance transformer
Inventor:
Billy G. Echols, Jr.
Patented Case
View Patent ↗
Granted: Dec 16, 2003
Filed: Dec 19, 2001
Inventor
Billy G. Echols, Jr.
Assignee (at issue)
Worlds.com, 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.