Granted Patent
Utility
US 4,487,496 · App. 06/375,457
Device for adjusting the level of a developing mixture, which consists of a toner and carrier particles, on a developing roller
Inventors:
Erich Baier, Rainer K/o/ efferlein, Bernhard Schlageter
Patented Case
View Patent ↗
Granted: Dec 11, 1984
Filed: May 6, 1982
Inventors
Erich Baier
Rainer K/o/ efferlein
Bernhard Schlageter
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.