Granted Patent
Utility
US 4,951,111 · App. 06/689,491
Integrated circuit device
Inventor:
Hirohiko Yamamoto
Patented Case
View Patent ↗
Granted: Aug 21, 1990
Filed: Jan 3, 1985
Inventor
Hirohiko Yamamoto
Assignee (at issue)
NIPPON ELECTRIC CO., LTD.
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.