Granted Patent
Utility
US 5,435,461 · App. 08/285,387
Cartridge for dispensing toner concentrate
Inventors:
David L. Smith, David J. Arcaro
Patented Case
View Patent ↗
Granted: Jul 25, 1995
Filed: Aug 3, 1994
Inventors
David L. Smith
David J. Arcaro
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.