Granted Patent
Utility
US 4,633,441 · App. 06/655,497
Dual port memory circuit
Inventor:
Shoji Ishimoto
Patented Case
View Patent ↗
Granted: Dec 30, 1986
Filed: Sep 28, 1984
Inventor
Shoji Ishimoto
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.