Granted Patent
Utility
US 5,437,794 · App. 08/244,699
Hydrocyclone with turbulence creating means
Inventor:
Roine Andersson
Patented Case
View Patent ↗
Granted: Aug 1, 1995
Filed: Jun 1, 1994
Inventor
Roine Andersson
Assignee (at issue)
Celleco-Hedemora AB
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.