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Campion and Johnson, of Hoyles' Factory, Woolpack Lane, Nottingham.
1859 Business set up by William Campion and Henry Johnson
1859 Patent #876 granted to William Campion of Nottingham, of the firm W.W. Campion, machine builders.
1860 William Campion and William Campion of Nottingham gained patent no.1569 for sewing machines.
By 1864 possible successor: William Campion