Granted Patent
Utility
US 4,984,209 · App. 07/114,770
Burst refresh of dynamic random access memory for personal computers
Inventors:
Babu Rajaram, Mark J. Foster
Patented Case
View Patent ↗
Granted: Jan 8, 1991
Filed: Oct 30, 1987
Inventors
Babu Rajaram
Mark J. Foster
Assignee (at issue)
Zenith Data Systems 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.