Granted Patent
Utility
US 4,692,018 · App. 06/772,251
Cartridge-type apparatus for exchanging a developing device and toner supply container
Inventor:
Takashi Tamura
Patented Case
View Patent ↗
Granted: Sep 8, 1987
Filed: Sep 3, 1985
Inventor
Takashi Tamura
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.