Granted Patent
Utility
US 6,782,578 · App. 10/296,779
Swimming pool pressure cleaner with internal steering mechanism
Inventors:
Dieter J. Rief, Manuela Rief
Patented Case
View Patent ↗
Granted: Aug 31, 2004
Filed: Nov 26, 2002
Inventors
Dieter J. Rief
Manuela Rief
Assignee (at issue)
POOLVERGNUEGEN
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.