Granted Patent
Utility
US 6,553,205 · App. 10/014,571
System for toner cleaning
Inventor:
Chu-heng Liu
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Dec 14, 2001
Inventor
Chu-heng Liu
Assignee (at issue)
Xerox Corporation
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.