Granted Patent
Utility
US 5,837,019 · App. 08/891,786
Device for separating dust particles
Inventor:
Wilhelm Endres
Patented Case
View Patent ↗
Granted: Nov 17, 1998
Filed: Jul 14, 1997
Inventor
Wilhelm Endres
Assignee (at issue)
Asea Brown Boveri, S.A.
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.