Granted Patent
Utility
US 4,127,820 · App. 05/781,878
Electrical circuit for multiplexing and dividing different bands or frequencies
Inventors:
Howard R. Beelitz, Donald R. Preslar
Patented Case
View Patent ↗
Granted: Nov 28, 1978
Filed: Mar 28, 1977
Inventors
Howard R. Beelitz
Donald R. Preslar
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.