Granted Patent
Utility
US 5,320,756 · App. 08/085,006
Method of treating aqueous alkaline effluents derived from cleaning electronic circuit assemblies
Inventor:
Anthony E. Winston
Patented Case
View Patent ↗
Granted: Jun 14, 1994
Filed: Jun 29, 1993
Inventor
Anthony E. Winston
Assignee (at issue)
Church & Dwight Co., 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.