Granted Patent
Utility
US 4,640,607 · App. 06/680,707
Simplex to duplex copier apparatus
Inventor:
Richard L. Bray
Patented Case
View Patent ↗
Granted: Feb 3, 1987
Filed: Dec 12, 1984
Inventor
Richard L. Bray
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.