Granted Patent
Utility
US 6,164,742 · App. 08/308,035
Active accumulator system for an ink-jet pen
Inventor:
Mark Hauck
Patented Case
View Patent ↗
Granted: Dec 26, 2000
Filed: Sep 14, 1994
Inventor
Mark Hauck
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.