Granted Patent
Utility
US 4,280,140 · App. 06/107,732
Microcomputer-controlled one-step-back automatic frequency control tuning system
Inventor:
Peter C. Skerlos
Patented Case
View Patent ↗
Granted: Jul 21, 1981
Filed: Feb 19, 1980
Inventor
Peter C. Skerlos
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.