Granted Patent
Utility
US 6,638,433 · App. 10/095,644
System and method for controlling water-only cyclones
Inventors:
Larry A. Watters, Daniel S. Placha
Patented Case
View Patent ↗
Granted: Oct 28, 2003
Filed: Mar 12, 2002
Inventors
Larry A. Watters
Daniel S. Placha
Assignee (at issue)
Sedgman
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.