Granted Patent
Utility
US 4,323,922 · App. 06/104,147
Television coding system with channel level identification
Inventors:
Pieter den Toonder, Glenn P. Doles, John A. Lund, Richard G. Merrell, Graham S. Stubbs
Patented Case
View Patent ↗
Granted: Apr 6, 1982
Filed: Dec 17, 1979
Inventors
Pieter den Toonder
Glenn P. Doles
John A. Lund
Richard G. Merrell
Graham S. Stubbs
Assignee (at issue)
Oak Industries Inc.
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.