Granted Patent
Utility
US 4,899,690 · App. 07/232,062
Container for electrostatographic toner or developer
Inventors:
Frank Hacknauer, Kenneth D. Corby
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: Aug 15, 1988
Inventors
Frank Hacknauer
Kenneth D. Corby
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.