Granted Patent
Utility
US 5,022,003 · App. 07/515,018
Semiconductor memory device
Inventor:
Takaki Kohno
Patented Case
View Patent ↗
Granted: Jun 4, 1991
Filed: Apr 26, 1990
Inventor
Takaki Kohno
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.