Granted Patent
Utility
US 5,339,140 · App. 07/971,121
Method and apparatus for control of toner charge
Inventors:
Robert E. Zeman, Thomas K. Hilbert
Patented Case
View Patent ↗
Granted: Aug 16, 1994
Filed: Nov 4, 1992
Inventors
Robert E. Zeman
Thomas K. Hilbert
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.