Granted Patent
Utility
US 5,677,022 · App. 08/761,060
Electrostatographic roller mask
Inventors:
Robert E. Zeman, David R. Jackson, William B. Vreeland
Patented Case
View Patent ↗
Granted: Oct 14, 1997
Filed: Dec 5, 1996
Inventors
Robert E. Zeman
David R. Jackson
William B. Vreeland
Assignee (at issue)
EASTMAN KODAK COMPANY
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.