Granted Patent
Utility
US 4,935,899 · App. 07/299,092
Semiconductor memory device with redundant memory cells
Inventor:
Seiichi Morigami
Patented Case
View Patent ↗
Granted: Jun 19, 1990
Filed: Jan 19, 1989
Inventor
Seiichi Morigami
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.