Granted Patent
Utility
US 6,733,558 · App. 09/855,480
Beneficiated sludge
Inventor:
Ronald Highsmith
Patented Case
View Patent ↗
Granted: May 11, 2004
Filed: May 15, 2001
Inventor
Ronald Highsmith
Assignee (at issue)
HONEYWELL INTERNATIONAL INC.
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.