Granted Patent
Utility
US 4,555,809 · App. 06/545,670
R.F. Diplexing and multiplexing means
Inventor:
David J. Carlson
Patented Case
View Patent ↗
Granted: Nov 26, 1985
Filed: Oct 26, 1983
Inventor
David J. Carlson
Assignee (at issue)
RCA Corporation
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.