Granted Patent
Utility
US 4,873,013 · App. 07/256,897
Aqueous alkali metal halogenite compositions containing a colorant stabilized by ammonium hydroxide
Inventor:
Richard S. Hutchings
Patented Case
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Granted: Oct 10, 1989
Filed: Oct 13, 1988
Inventor
Richard S. Hutchings
Assignee (at issue)
The Dracket Company
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.