Granted Patent
Utility
US 4,300,154 · App. 06/161,839
Color demodulation and matrixing system
Inventor:
Christopher M. Engel
Patented Case
View Patent ↗
Granted: Nov 10, 1981
Filed: Jun 23, 1980
Inventor
Christopher M. Engel
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.