Granted Patent
Utility
US 4,473,221 · App. 06/301,236
Paper feeding roller
Inventor:
Tomio Arai
Patented Case
View Patent ↗
Granted: Sep 25, 1984
Filed: Sep 11, 1981
Inventor
Tomio Arai
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.