Granted Patent
Utility
US 5,942,287 · App. 09/063,904
Extended wear developer sleeve with coupling agent
Inventors:
Robert Arnold Christiansen, Martin Victor DiGirolamo, Michelle Morris, Mark Meredith Trayner
Patented Case
View Patent ↗
Granted: Aug 24, 1999
Filed: Apr 21, 1998
Inventors
Robert Arnold Christiansen
Martin Victor DiGirolamo
Michelle Morris
Mark Meredith Trayner
Assignee (at issue)
Lexmark International, Inc.
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.