Granted Patent
Utility
US 5,881,336 · App. 08/713,203
Image producing apparatus
Inventor:
Mitsuo Sato
Patented Case
View Patent ↗
Granted: Mar 9, 1999
Filed: Sep 12, 1996
Inventor
Mitsuo Sato
Assignee (at issue)
Tohoku Ricoh 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.