Granted Patent
Utility
US 4,288,865 · App. 06/119,293
Low-power battery backup circuit for semiconductor memory
Inventor:
Andrew C. Graham
Patented Case
View Patent ↗
Granted: Sep 8, 1981
Filed: Feb 6, 1980
Inventor
Andrew C. Graham
Assignee (at issue)
Mostek 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.