Granted Patent
Utility
US 4,447,330 · App. 06/476,400
Method of treating waste water
Inventor:
David Babineaux, III
Patented Case
View Patent ↗
Granted: May 8, 1984
Filed: Mar 23, 1983
Inventor
David Babineaux, III
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.