Granted Patent
Utility
US 6,756,866 · App. 09/676,142
Phase shifting waveguide with alterable impedance walls and module utilizing the waveguides for beam phase shifting and steering
Inventor:
John A. Higgins
Patented Case
View Patent ↗
Granted: Jun 29, 2004
Filed: Sep 29, 2000
Inventor
John A. Higgins
Assignee (at issue)
Innovative Technology Licensing LLC
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.