Granted Patent
Utility
US 3,993,955 · App. 05/571,536
Method of and apparatus for establishing emergency communications in a two-way cable television system
Inventors:
Brian Belcher, John G. Cambell
Patented Case
View Patent ↗
Granted: Nov 23, 1976
Filed: Apr 25, 1975
Inventors
Brian Belcher
John G. Cambell
Assignee (at issue)
Tocom 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.