Granted Patent
Utility
US 5,473,422 · App. 08/339,159
Color image forming device
Inventor:
Masayasu Anzai
Patented Case
View Patent ↗
Granted: Dec 5, 1995
Filed: Nov 10, 1994
Inventor
Masayasu Anzai
Assignee (at issue)
Hitachi Koki 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.