Granted Patent
Utility
US 4,853,877 · App. 07/266,333
Apparatus and method for efficient plotting
Inventors:
Anthony D. Parkhurst, Thomas J. Halpenny
Patented Case
View Patent ↗
Granted: Aug 1, 1989
Filed: Nov 1, 1988
Inventors
Anthony D. Parkhurst
Thomas J. Halpenny
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.