Granted Patent
Utility
US 4,554,581 · App. 06/701,713
STV Decoder with improved data signal recognition capability
Inventors:
Michael L. Tentler, David L. Walker, Wayne E. Bretl, Gregory A. Williams
Patented Case
View Patent ↗
Granted: Nov 19, 1985
Filed: Feb 14, 1985
Inventors
Michael L. Tentler
David L. Walker
Wayne E. Bretl
Gregory A. Williams
Assignee (at issue)
Zenith Radio 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.