Granted Patent
Utility
US 4,575,771 · App. 06/493,713
Apparatus for superimposing and reproducing still picture signals
Inventors:
Tadashi Oota, Masahiro Sawada
Patented Case
View Patent ↗
Granted: Mar 11, 1986
Filed: May 11, 1983
Inventors
Tadashi Oota
Masahiro Sawada
Assignee (at issue)
Nippon Kogaku K.K.
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.