Granted Patent
Utility
US 5,798,973 · App. 08/865,164
Semiconductor memory device having redundant memory cells
Inventor:
Satoshi Isa
Patented Case
View Patent ↗
Granted: Aug 25, 1998
Filed: May 29, 1997
Inventor
Satoshi Isa
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.