Granted Patent
Utility
US 4,349,919 · App. 06/164,146
Transmitter/receivers capable of contemporaneous transmission/reception
Inventor:
Christopher K. Richardson
Patented Case
View Patent ↗
Granted: Sep 14, 1982
Filed: Jun 30, 1980
Inventor
Christopher K. Richardson
Assignee (at issue)
Plessey Handel Und Investments AG
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.