Granted Patent
Utility
US 5,886,587 · App. 08/798,257
Flipped lumped element circulator
Inventor:
Rick Sturdivant
Patented Case
View Patent ↗
Granted: Mar 23, 1999
Filed: Feb 11, 1997
Inventor
Rick Sturdivant
Assignee (at issue)
Raytheon 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.