Granted Patent
Utility
US 4,536,293 · App. 06/323,052
Method of treating waste water
Inventor:
David Babineaux, III
Patented Case
View Patent ↗
Granted: Aug 20, 1985
Filed: Nov 19, 1981
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.