Granted Patent
Utility
US 4,797,681 · App. 06/871,194
Dual-mode circular-polarization horn
Inventors:
Sidney J. Kaplan, Mon N. Wong
Patented Case
View Patent ↗
Granted: Jan 10, 1989
Filed: Jun 5, 1986
Inventors
Sidney J. Kaplan
Mon N. Wong
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.