Granted Patent
Utility
US 4,368,475 · App. 06/256,864
Jet drop copier
Inventor:
John W. Donahue
Patented Case
View Patent ↗
Granted: Jan 11, 1983
Filed: Apr 24, 1981
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.