Granted Patent
Utility
US 5,220,382 · App. 07/812,141
Development apparatus having a cross-mixing auger
Inventor:
Edwin A. Hediger
Patented Case
View Patent ↗
Granted: Jun 15, 1993
Filed: Dec 23, 1991
Inventor
Edwin A. Hediger
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.