Granted Patent
Utility
US 4,870,416 · App. 07/146,748
Analogue to digital converters
Inventor:
David Bernard Mapleston
Patented Case
View Patent ↗
Granted: Sep 26, 1989
Filed: Feb 18, 1988
Inventor
David Bernard Mapleston
Assignee (at issue)
Plessey Overseas Limited
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.