Granted Patent
Utility
US 4,830,618 · App. 07/112,829
Electronic spelling machine
Inventor:
Morton E. David
Patented Case
View Patent ↗
Granted: May 16, 1989
Filed: Oct 23, 1987
Inventor
Morton E. David
Assignee (at issue)
Franklin Computer Corporation
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.