Granted Patent
Utility
US 5,569,381 · App. 08/448,653
Upflow clarifier
Inventor:
James Kuntz
Patented Case
View Patent ↗
Granted: Oct 29, 1996
Filed: May 24, 1995
Inventor
James Kuntz
Assignee (at issue)
Spokane Industries
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.