Granted Patent
Utility
US 6,188,620 · App. 09/457,731
Semiconductor memory device having a redundancy judgment circuit
Inventor:
Masahiro Shibuya
Patented Case
View Patent ↗
Granted: Feb 13, 2001
Filed: Dec 10, 1999
Inventor
Masahiro Shibuya
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.