Granted Patent
Utility
US 5,838,457 · App. 08/490,292
Index printing apparatus including exposure control means
Inventor:
Choji Umemoto
Patented Case
View Patent ↗
Granted: Nov 17, 1998
Filed: Jun 14, 1995
Inventor
Choji Umemoto
Assignee (at issue)
Noritsu 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.