Granted Patent
Utility
US 4,604,628 · App. 06/474,557
Parasitic array with driven sleeve element
Inventor:
Roger Cox
Patented Case
View Patent ↗
Granted: Aug 5, 1986
Filed: Mar 11, 1983
Inventor
Roger Cox
Assignee (at issue)
Telex Communications, 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.