Granted Patent
Utility
US 4,784,081 · App. 06/943,193
Mixing device for cross-blending of developer mix in developing stations of electrophotographic printer devices
Inventor:
Joseph Knott
Patented Case
View Patent ↗
Granted: Nov 15, 1988
Filed: Dec 18, 1986
Inventor
Joseph Knott
Assignee (at issue)
Siemens Aktiengesellschaft
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.