Granted Patent
Utility
US 6,382,521 · App. 09/763,315
Spray powder-coating system
Inventor:
Gerald Haas
Patented Case
View Patent ↗
Granted: May 7, 2002
Filed: Feb 22, 2001
Inventor
Gerald Haas
Assignee (at issue)
ITW Gema 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.