Granted Patent
Utility
US 4,451,133 · App. 06/369,897
Device for removing the developer mix from a developing station
Inventors:
Walter Kopp, Karl-Heinz Saalmueller
Patented Case
View Patent ↗
Granted: May 29, 1984
Filed: Apr 19, 1982
Inventors
Walter Kopp
Karl-Heinz Saalmueller
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.