Granted Patent
Utility
US 4,965,672 · App. 07/048,156
Method and apparatus for halftone imaging
Inventors:
Ronald J. Duke, Sun Lu, James R. McLaughlin, Eric Walowit
Patented Case
View Patent ↗
Granted: Oct 23, 1990
Filed: May 11, 1987
Inventors
Ronald J. Duke
Sun Lu
James R. McLaughlin
Eric Walowit
Assignee (at issue)
The Mead Corporation
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.