Granted Patent
Utility
US 4,999,652 · App. 07/312,520
Ink supply apparatus for rapidly coupling and decoupling a remote ink source to a disposable ink jet pen
Inventor:
C. S. Chan
Patented Case
View Patent ↗
Granted: Mar 12, 1991
Filed: Feb 21, 1989
Inventor
C. S. Chan
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.