Granted Patent
Utility
US 6,572,774 · App. 09/784,032
Waste treatment method and apparatus with integral clarifier
Inventor:
Donald D. Ricketts
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: Feb 16, 2001
Inventor
Donald D. Ricketts
Assignee (at issue)
Wastewater Technology, 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.