Granted Patent
Utility
US 4,577,343 · App. 06/531,195
Sound synthesizer
Inventor:
Toshio Oura
Patented Case
View Patent ↗
Granted: Mar 18, 1986
Filed: Sep 12, 1983
Inventor
Toshio Oura
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.