Granted Patent
Utility
US 4,870,621 · App. 07/127,022
Dual port memory device with improved serial access scheme
Inventor:
Kazuhiro Nakada
Patented Case
View Patent ↗
Granted: Sep 26, 1989
Filed: Nov 27, 1987
Inventor
Kazuhiro Nakada
Assignee (at issue)
NEC 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.