Granted Patent
Utility
US 4,237,486 · App. 05/959,277
Compatible transmission of an encoded signal with a television
Inventor:
Richard L. Shimp
Patented Case
View Patent ↗
Granted: Dec 2, 1980
Filed: Nov 9, 1978
Inventor
Richard L. Shimp
Assignee (at issue)
ComSonics, 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.