Granted Patent
Utility
US 4,989,793 · App. 07/473,356
Indirect charging electrode for electrostatic spray guns
Inventor:
James J. Gimple
Patented Case
View Patent ↗
Granted: Feb 5, 1991
Filed: Feb 2, 1990
Inventor
James J. Gimple
Assignee (at issue)
ILLINOIS TOOL WORKS INC.
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.