Granted Patent
Utility
US 4,680,645 · App. 06/899,358
Method for rendering gray scale images with variable dot sizes
Inventors:
Gary J. Dispoto, Larry R. Mather, John D. Meyer
Patented Case
View Patent ↗
Granted: Jul 14, 1987
Filed: Aug 25, 1986
Inventors
Gary J. Dispoto
Larry R. Mather
John D. Meyer
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.