Granted Patent
Utility
US 4,846,407 · App. 07/040,666
Electrostatic spraying apparatus
Inventors:
Ronald A. Coffee, Timothy James Noakes, Stephen Bancroft, Edward J. Bals
Patented Case
View Patent ↗
Granted: Jul 11, 1989
Filed: Apr 21, 1987
Inventors
Ronald A. Coffee
Timothy James Noakes
Stephen Bancroft
Edward J. Bals
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.