Granted Patent
Utility
US 4,455,618 · App. 06/236,394
Programmable calculator
Inventors:
Jack M. Walden, William D. Eads, Ray J. Cozzens, John Bidwell, Robert A. Jewett, Martin S. Wilson, Daniel J. Griffin, Robert E. Kuseski, Louis T. Schulte
Patented Case
View Patent ↗
Granted: Jun 19, 1984
Filed: Feb 20, 1981
Inventors
Jack M. Walden
William D. Eads
Ray J. Cozzens
John Bidwell
Robert A. Jewett
Martin S. Wilson
Daniel J. Griffin
Robert E. Kuseski
Louis T. Schulte
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.