Granted Patent
Utility
US 5,631,681 · App. 08/412,647
Ink replenishing system and method for ink-jet printers
Inventors:
Richard I. Klaus, Eric L. Ahlvin
Patented Case
View Patent ↗
Granted: May 20, 1997
Filed: Mar 29, 1995
Inventors
Richard I. Klaus
Eric L. Ahlvin
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.