Granted Patent
Utility
US 5,392,963 · App. 08/069,636
Refurbished toner cartridge
Inventors:
Gar P. Kelly, Brian J. Renstrom, K. Trent Christensen
Patented Case
View Patent ↗
Granted: Feb 28, 1995
Filed: Jun 1, 1993
Inventors
Gar P. Kelly
Brian J. Renstrom
K. Trent Christensen
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.