Granted Patent
Utility
US 4,894,685 · App. 07/106,856
Multicolor image forming method and apparatus
Inventor:
Hisashi Shoji
Patented Case
View Patent ↗
Granted: Jan 16, 1990
Filed: Oct 6, 1987
Inventor
Hisashi Shoji
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.