Granted Patent
Utility
US 4,754,425 · App. 06/789,214
Dynamic random access memory refresh circuit selectively adapted to different clock frequencies
Inventor:
Nataraj Bhadriraju
Patented Case
View Patent ↗
Granted: Jun 28, 1988
Filed: Oct 18, 1985
Inventor
Nataraj Bhadriraju
Assignee (at issue)
GTE Communication 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.