Granted Patent
Utility
US 5,231,411 · App. 07/708,953
One piece millimeter wave phase shifter/antenna
Inventors:
William A. Harrington, James V. Strahan, Lawrence DiFrancesco
Patented Case
View Patent ↗
Granted: Jul 27, 1993
Filed: May 31, 1991
Inventors
William A. Harrington
James V. Strahan
Lawrence DiFrancesco
Assignee (at issue)
Hughes Aircraft Company
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.