Granted Patent
Utility
US 5,777,647 · App. 08/611,111
Side-loaded pressure regulated free-ink ink-jet pen
Inventors:
Norman E. Pawlowski, Jr., Melissa D. Boyd
Patented Case
View Patent ↗
Granted: Jul 7, 1998
Filed: Mar 5, 1996
Inventors
Norman E. Pawlowski, Jr.
Melissa D. Boyd
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.