Granted Patent
Utility
US 5,596,358 · App. 08/332,010
Method and apparatus for refilling a print cartridge having a reservoir pressure of less than ambient pressure
Inventors:
David S. Hunt, Jon Fong, Joseph E. Scheffelin, Alfred Zepeda
Patented Case
View Patent ↗
Granted: Jan 21, 1997
Filed: Oct 31, 1994
Inventors
David S. Hunt
Jon Fong
Joseph E. Scheffelin
Alfred Zepeda
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.