Granted Patent
Utility
US 4,291,340 · App. 06/075,064
Jet drop copier with multiplex ability
Inventor:
John W. Donahue
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Sep 12, 1979
Inventor
John W. Donahue
Assignee (at issue)
The Mead Corporation
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.