Granted Patent
Utility
US 4,780,844 · App. 06/886,615
Data input circuit with digital phase locked loop
Inventor:
Glenn J. Keller
Patented Case
View Patent ↗
Granted: Oct 25, 1988
Filed: Jul 18, 1986
Inventor
Glenn J. Keller
Assignee (at issue)
Commodore-Amiga, 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.