Granted Patent
Utility
US 4,901,217 · App. 07/310,472
Digital input power supply and method
Inventor:
David F. Wilson
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: Feb 13, 1989
Inventor
David F. Wilson
Assignee (at issue)
Apple Computer 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.