Granted Patent
Utility
US 4,466,728 · App. 06/375,458
Device for the development of charge images, which are arranged on a charge image carrier, with the aid of a developing mixture consisting of toner and carrier particles
Inventors:
Bernhard Schlageter, Manfred Maier
Patented Case
View Patent ↗
Granted: Aug 21, 1984
Filed: May 6, 1982
Inventors
Bernhard Schlageter
Manfred Maier
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.