Granted Patent
Utility
US 4,480,305 · App. 06/227,453
Programmable calculator including editing capability
Inventors:
Robert E. Watson, Jack M. Walden, Charles W. Near
Patented Case
View Patent ↗
Granted: Oct 30, 1984
Filed: Jan 22, 1981
Inventors
Robert E. Watson
Jack M. Walden
Charles W. Near
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.