Granted Patent
Utility
US 4,633,808 · App. 06/726,354
Developing process for electrophotography using a two-component developer
Inventor:
Kouji Maekawa
Patented Case
View Patent ↗
Granted: Jan 6, 1987
Filed: Apr 23, 1985
Inventor
Kouji Maekawa
Assignee (at issue)
Mita Industrial 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.