Granted Patent
Utility
US 4,557,591 · App. 06/467,482
Photographic printing apparatus
Inventors:
Moriyoshi Serizawa, Haruo Hakamada
Patented Case
View Patent ↗
Granted: Dec 10, 1985
Filed: Feb 8, 1983
Inventors
Moriyoshi Serizawa
Haruo Hakamada
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.