Granted Patent
Utility
US 4,530,597 · App. 06/465,422
Brush cleaning device
Inventors:
Masahiko Itaya, Satoshi Haneda
Patented Case
View Patent ↗
Granted: Jul 23, 1985
Filed: Feb 9, 1983
Inventors
Masahiko Itaya
Satoshi Haneda
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.