Granted Patent
Utility
US 4,549,218 · App. 06/536,712
On-screen display
Inventors:
Ronald R. Norley, Gene K. Sendelweck, Keming Chen
Patented Case
View Patent ↗
Granted: Oct 22, 1985
Filed: Sep 30, 1983
Inventors
Ronald R. Norley
Gene K. Sendelweck
Keming Chen
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.