Granted Patent
Utility
US 6,466,749 · App. 09/722,580
Adjustable developer ratio forming method and apparatus
Inventor:
Katherine N. O'Brien
Patented Case
View Patent ↗
Granted: Oct 15, 2002
Filed: Nov 28, 2000
Inventor
Katherine N. O'Brien
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.