Granted Patent
Utility
US 6,068,134 · App. 09/232,235
Clarifier with influent well scum removal
Inventor:
Robert Shurtleff
Patented Case
View Patent ↗
Granted: May 30, 2000
Filed: Jan 19, 1999
Inventor
Robert Shurtleff
Assignee (at issue)
Enviroquip 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.