Granted Patent
Utility
US 4,833,501 · App. 07/017,980
Apparatus and method for filling a toner reservoir by suction
Inventor:
Mehmet Ali Buyukguclu
Patented Case
View Patent ↗
Granted: May 23, 1989
Filed: Feb 24, 1987
Inventor
Mehmet Ali Buyukguclu
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.