Granted Patent
Utility
US 4,465,112 · App. 06/369,886
Device for filling toner from a container into a reservoir
Inventor:
Walter Kopp
Patented Case
View Patent ↗
Granted: Aug 14, 1984
Filed: Apr 19, 1982
Inventor
Walter Kopp
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.