Granted Patent
Utility
US 4,614,286 · App. 06/508,093
Toner container unit
Inventors:
Keisuke Yamaguchi, Eturo Ochiai
Patented Case
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Granted: Sep 30, 1986
Filed: Jun 27, 1983
Inventors
Keisuke Yamaguchi
Eturo Ochiai
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.