Granted Patent
Utility
US 4,469,434 · App. 06/336,869
Cleaning apparatus for electrophotography
Inventors:
Yoshio Yamazaki, Kouichi Gunzi, Shigeru Inowa
Patented Case
View Patent ↗
Granted: Sep 4, 1984
Filed: Jan 4, 1982
Inventors
Yoshio Yamazaki
Kouichi Gunzi
Shigeru Inowa
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.