Granted Patent
Utility
US 4,570,083 · App. 06/457,596
Digital circuit
Inventor:
Kazuo Nakaizumi
Patented Case
View Patent ↗
Granted: Feb 11, 1986
Filed: Jan 13, 1983
Inventor
Kazuo Nakaizumi
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.