Granted Patent
Utility
US 4,847,808 · App. 07/041,033
Read only semiconductor memory having multiple bit cells
Inventor:
Hiroyuki Kobatake
Patented Case
View Patent ↗
Granted: Jul 11, 1989
Filed: Apr 22, 1987
Inventor
Hiroyuki Kobatake
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.