Granted Patent
Utility
US 6,712,222 · App. 10/207,371
Integrated scum baffle and launder cover for use in a clarifier tank
Inventor:
Earle Schaller
Patented Case
View Patent ↗
Granted: Mar 30, 2004
Filed: Jul 29, 2002
Inventor
Earle Schaller
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.