Granted Patent
Utility
US 4,448,514 · App. 06/363,917
Split exposure optical system for copying machine
Inventors:
Yozo Fujii, Hirofumi Sakaguchi, Tsugio Hirabayashi
Patented Case
View Patent ↗
Granted: May 15, 1984
Filed: Mar 31, 1982
Inventors
Yozo Fujii
Hirofumi Sakaguchi
Tsugio Hirabayashi
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.