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of Atlas Works, Oozells Street, Birmingham.
1876 Dissolution of the Partnership between Henry Joseph West and Grosvenor Calixte Joseph de Jacobi du Vallon, carrying on business at the Atlas Works, Oozells Street, Birmingham, and at 17, Mason-street, Lambeth, as Refrigerating and General Engineers and Iron Founders, under the style or firm of West and Du Vallon. All debts owing to and by the said late firm will be received and paid by the said Grosvenor Calixte Joseph de Jacobi du Vallon, who will continue to carry on the business
At some point Du Vallon went into partnership with the Lloyds
1878 Duvallon and Lloyd exhibited ice making machinery at the 1878 Paris Exhibition
1878 Dissolution of the Partnership between Grosvenor Calixte Joseph de Jacobi Duvallon, George Braithwaite Lloyd, and Sampson Samuel Lloyd the younger, Engineers, under the style or firm of Duvallon and Lloyd, by mutual consent.
1879 Advertisement showing engravings of stationary steam engines, haulage engine, and engine/boiler combinations. Note that one of the engines illustrated bears the name 'Duvallon and Lloyd' and that the same engine appears in an 1880s advertisement for Thomas Piggott and Co, with the name changed to Thomas Piggott and Co. The same 'Atlas Works, Oozells Street' address appears in both advertisements.