Sir William Congreve

Standard Name: Congreve, Sir William

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About 1818: Sir William Congreve (namesake of the dramatist)...

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About 1818

Sir William Congreve (namesake of the dramatist) invented a machine to produce coloured watermarking of paper.
Gentry, Helen, and David Greenhood. Chronology of Books and Printing. Rev. ed., Macmillan, 1936.
Some sources give a date of 1819.

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