Granted Patent
Utility
US 5,537,136 · App. 08/163,648
Ink jet cartridge including filter inserts
Inventors:
Fred Young Brandon, Curtis Ray Droege, James Harold Powers
Patented Case
View Patent ↗
Granted: Jul 16, 1996
Filed: Dec 7, 1993
Inventors
Fred Young Brandon
Curtis Ray Droege
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.