Granted Patent
Utility
US 4,855,752 · App. 07/256,174
Method of improving dot-on-dot graphics area-fill using an ink-jet device
Inventor:
Donald B. Bergstedt
Patented Case
View Patent ↗
Granted: Aug 8, 1989
Filed: Oct 11, 1988
Inventor
Donald B. Bergstedt
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.