Granted Patent
Utility
US 4,550,309 · App. 06/580,584
Analog to digital converter
Inventors:
Donald R. Hiller, Charles A. Kingsford-Smith
Patented Case
View Patent ↗
Granted: Oct 29, 1985
Filed: Feb 16, 1984
Inventors
Donald R. Hiller
Charles A. Kingsford-Smith
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.