Granted Patent
Utility
US 6,697,021 · App. 10/047,653
Double F antenna
Inventor:
Daliang Shi
Patented Case
View Patent ↗
Granted: Feb 24, 2004
Filed: Jan 14, 2002
Inventor
Daliang Shi
Assignee (at issue)
Microtune (San Diego), 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.