Granted Patent
Utility
US 4,482,244 · App. 06/438,799
Magnetic brush cleaning device
Inventors:
Yoshio Yamazaki, Kiyoaki Kawamoto, Shun Kawata
Patented Case
View Patent ↗
Granted: Nov 13, 1984
Filed: Nov 3, 1982
Inventors
Yoshio Yamazaki
Kiyoaki Kawamoto
Shun Kawata
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.