Granted Patent
Utility
US 5,650,385 · App. 08/609,895
Aqueous metal cleaner
Inventors:
Steven E. Dunn, Anthony E. Winston
Patented Case
View Patent ↗
Granted: Jul 22, 1997
Filed: Mar 4, 1996
Inventors
Steven E. Dunn
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.