Granted Patent
Utility
US 5,747,439 · App. 08/626,543
Aqueous sodium salt metal cleaner
Inventors:
Steven E. Dunn, Gale A. Byrnes
Patented Case
View Patent ↗
Granted: May 5, 1998
Filed: Apr 2, 1996
Inventors
Steven E. Dunn
Gale A. Byrnes
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.