Granted Patent
Utility
US 5,604,402 · App. 08/381,138
Harmonic gyro traveling wave tube having a multipole field exciting circuit
Inventor:
Robert S. Symons
Patented Case
View Patent ↗
Granted: Feb 18, 1997
Filed: Jan 31, 1995
Inventor
Robert S. Symons
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.