Granted Patent
Utility
US 4,864,491 · App. 06/708,504
Memory device
Inventor:
Mitsuorou Ohuchi
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Mar 5, 1985
Inventor
Mitsuorou Ohuchi
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.