Granted Patent
Utility
US 4,728,880 · App. 06/935,878
Multiple voltage-pulsed corona charging with a single power supply
Inventor:
George R. Walgrove, III
Patented Case
View Patent ↗
Granted: Mar 1, 1988
Filed: Nov 28, 1986
Inventor
George R. Walgrove, III
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.