Granted Patent
Utility
US 4,802,126 · App. 07/122,737
Semiconductor memory device
Inventor:
Shigeru Takayama
Patented Case
View Patent ↗
Granted: Jan 31, 1989
Filed: Nov 18, 1987
Inventor
Shigeru Takayama
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.