Granted Patent
Utility
US 5,774,025 · App. 08/511,927
Planar phase shifters using low coercive force and fast switching, multilayerable ferrite
Inventors:
John D. Adam, Steven N. Stitzer, Carol J. Painter, Michael R. Daniel, Deborah P. Partlow, Andrew J. Piloto
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Aug 7, 1995
Inventors
John D. Adam
Steven N. Stitzer
Carol J. Painter
Michael R. Daniel
Deborah P. Partlow
Andrew J. Piloto
Assignee (at issue)
NORTHROP GRUMMAN CORPORATION
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.