Granted Patent
Utility
US 4,306,685 · App. 06/228,556
Containers utilized in electrostatic spraying
Inventor:
Ronald A. Coffee
Patented Case
View Patent ↗
Granted: Dec 22, 1981
Filed: Jan 26, 1981
Inventor
Ronald A. Coffee
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.