Granted Patent
Utility
US 4,989,013 · App. 07/332,208
Multifrequency antenna having a DC power path
Inventors:
Frank Patterson Smith, 2nd, Thomas R. Krishan, Hugh P. McAdams
Patented Case
View Patent ↗
Granted: Jan 29, 1991
Filed: Mar 31, 1989
Inventors
Frank Patterson Smith, 2nd
Thomas R. Krishan
Hugh P. McAdams
Assignee (at issue)
Litton Systems, 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.