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Gas meter makers, of London, Manchester, Edinburgh and New South Wales (1925)
of Terminal House, Grosvenor Gardens, London, SW1. Telephone: Sloane 0111. Telegraphic Address: "Disc, Sowest, London". (1937)
1825 Company founded.
1890 Established a leather department for gas meter diaphragms.
1894 W. and B. Cowan was exporting gas meters to NSW, Australia as early as 1894.
1894 Antwerp Exhibition. Awarded Diploma of Honour for Lighting.
1900 On 16th November Parkinson and W. and B. Cowan was incorporated as a public company, manufacturers of gas meters and other gas apparatus, being the amalgamation of 2 of the oldest firms in this business: W. and B. Cowan Ltd of London, Manchester, Edinburgh and New South Wales, and W. Parkinson Ltd of London and Birmingham.