Granted Patent
Utility
US 5,661,510 · App. 08/343,693
Ink-jet cartridge venting
Inventors:
Fred Young Brandon, Curtis Ray Droege
Patented Case
View Patent ↗
Granted: Aug 26, 1997
Filed: Nov 22, 1994
Inventors
Fred Young Brandon
Curtis Ray Droege
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.