Granted Patent
Utility
US 4,830,872 · App. 06/898,260
Electrostatic coating blade and method of applying a thin layer of liquid therewith onto an object
Inventor:
Julian P. Grenfell
Patented Case
View Patent ↗
Granted: May 16, 1989
Filed: Aug 20, 1986
Inventor
Julian P. Grenfell
Assignee (at issue)
Sale Tilney Technology PLC
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.