Granted Patent
Utility
US 4,361,397 · App. 06/181,870
Cleaning apparatus for an electrostatic recording machine
Inventors:
Hiroshi Katakura, Tomio Arai
Patented Case
View Patent ↗
Granted: Nov 30, 1982
Filed: Aug 27, 1980
Inventors
Hiroshi Katakura
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.