Granted Patent
Utility
US 4,806,973 · App. 07/220,907
Color image-forming apparatus for producing overlapped monochrome images
Inventors:
Tadao Kishimoto, Toshifumi Isobe, Hiroyuki Maruyama, Jun Yokobori
Patented Case
View Patent ↗
Granted: Feb 21, 1989
Filed: Jul 19, 1988
Inventors
Tadao Kishimoto
Toshifumi Isobe
Hiroyuki Maruyama
Jun Yokobori
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.