Granted Patent
Utility
US 4,246,578 · App. 06/010,988
Pattern generation display system
Inventors:
Itaru Kawasaki, Goro Hamano
Patented Case
View Patent ↗
Granted: Jan 20, 1981
Filed: Feb 8, 1979
Inventors
Itaru Kawasaki
Goro Hamano
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, 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.