Granted Patent
Utility
US 4,578,712 · App. 06/449,385
Picture image discriminating apparatus
Inventor:
Masahiko Matsunawa
Patented Case
View Patent ↗
Granted: Mar 25, 1986
Filed: Dec 13, 1982
Inventor
Masahiko Matsunawa
Assignee (at issue)
Konishiroku Photo Industry 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.