Granted Patent
Utility
US 5,039,999 · App. 07/545,263
Accumulator and pressure control for ink-ket pens
Inventors:
Thomas H. Winslow, Bruce A. Anderson
Patented Case
View Patent ↗
Granted: Aug 13, 1991
Filed: Jun 26, 1990
Inventors
Thomas H. Winslow
Bruce A. Anderson
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.