Granted Patent
Utility
US 4,394,870 · App. 06/314,012
System for mixing concentrate and water to form fountain solution for offset printing presses
Inventors:
John MacPhee, David Wirth, John St. John
Patented Case
View Patent ↗
Granted: Jul 26, 1983
Filed: Oct 22, 1981
Inventors
John MacPhee
David Wirth
John St. John
Assignee (at issue)
Baldwin-Gegeheimer GmbH
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.