Granted Patent
Utility
US 4,638,423 · App. 06/708,632
Emulating computer
Inventor:
Danny B. Ballard
Patented Case
View Patent ↗
Granted: Jan 20, 1987
Filed: Mar 6, 1985
Inventor
Danny B. Ballard
Assignee (at issue)
Motorola, Inc.
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.