Granted Patent
Utility
US 4,774,499 · App. 07/008,675
Analog to digital converter
Inventor:
David Bernard Mapleston
Patented Case
View Patent ↗
Granted: Sep 27, 1988
Filed: Jan 29, 1987
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.