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John H. Widdowson Ltd, of Britannia Works, Ordsall Lane, Salford, Manchester.
Manufacturer of threading taps and dies.
1876 John Henry Widdowson (1828-1901) started in business on his own account as a manufacturer of screwing tackle.
Company took limited company status
1922 John Henry Widdowson (1857-1925) became Succeeded managing director
1925 Succeeded as chairman and managing director by John Henry Sheldon Widdowson