Granted Patent
Utility
US 5,521,560 · App. 08/341,812
Minimum phase shift microwave attenuator
Inventors:
Richard W. Burns, Darren E. Atkinson
Patented Case
View Patent ↗
Granted: May 28, 1996
Filed: Nov 18, 1994
Inventors
Richard W. Burns
Darren E. Atkinson
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.