Granted Patent
Utility
US 5,877,989 · App. 08/951,658
Semiconductor memory device
Inventor:
Noboru Egawa
Patented Case
View Patent ↗
Granted: Mar 2, 1999
Filed: Oct 16, 1997
Inventor
Noboru Egawa
Assignee (at issue)
OKI ELECTRIC INDUSTRY CO., LTD.
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.