Granted Patent
Utility
US 4,766,448 · App. 07/086,919
Electrostatic printhead method and apparatus
Inventors:
James Hack, Bernard Masson, David T. Beegan
Patented Case
View Patent ↗
Granted: Aug 23, 1988
Filed: Aug 19, 1987
Inventors
James Hack
Bernard Masson
David T. Beegan
Assignee (at issue)
Sanders GmbH
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.