Granted Patent
Utility
US 6,637,866 · App. 10/165,534
Energy efficient heater stack using DLC island
Inventors:
Robert W. Cornell, George Keith Parish, James Harold Powers
Patented Case
View Patent ↗
Granted: Oct 28, 2003
Filed: Jun 7, 2002
Inventors
Robert W. Cornell
George Keith Parish
James Harold Powers
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.