Granted Patent
Utility
US 4,560,943 · App. 06/493,915
F.M. demodulator with fail-safe features
Inventors:
Paul D. Negus, Tak C. Ng, Roger Badge, David Cowen
Patented Case
View Patent ↗
Granted: Dec 24, 1985
Filed: May 12, 1983
Inventors
Paul D. Negus
Tak C. Ng
Roger Badge
David Cowen
Assignee (at issue)
Westinghouse Brake and Signal Holdings Limited
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.