Granted Patent
Utility
US 5,874,788 · App. 08/046,127
External backup power supply
Inventor:
Thomas McCartney
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: Apr 12, 1993
Inventor
Thomas McCartney
Assignee (at issue)
Oneac 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.