Granted Patent
Utility
US 4,417,148 · App. 06/401,409
Photodetector device for detecting the front and rear ends of a moving sheet
Inventor:
Eiji Otake
Patented Case
View Patent ↗
Granted: Nov 22, 1983
Filed: Jul 23, 1982
Inventor
Eiji Otake
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.