Granted Patent
Utility
US 4,456,980 · App. 06/357,840
Semiconductor memory device
Inventors:
Junzo Yamada, Tsuneo Mano, Junichi Inoue
Patented Case
View Patent ↗
Granted: Jun 26, 1984
Filed: Mar 15, 1982
Inventors
Junzo Yamada
Tsuneo Mano
Junichi Inoue
Assignee (at issue)
Nippon Telegraph and Telephone Public 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.