Granted Patent
Utility
US 4,313,674 · App. 06/105,909
Cleaning apparatus for copying or the like
Inventors:
Hiroaki Ura, Hiroyuki Honda
Patented Case
View Patent ↗
Granted: Feb 2, 1982
Filed: Dec 21, 1979
Inventors
Hiroaki Ura
Hiroyuki Honda
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.