Granted Patent
Utility
US 4,560,184 · App. 06/674,524
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Inventor:
Thomas M. Williams, Jr.
Patented Case
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Granted: Dec 24, 1985
Filed: Nov 23, 1984
Inventor
Thomas M. Williams, Jr.
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.