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1870 Presumably T. Blundell and Sons
1877 Blundell Brothers were makers of pumps; the Waterwitch was claimed to be an improvement on the Downton pump
1880 Waterwitch Pump made by Blundell Brothers of West India Dock Road, Limehouse, exhibited at the Agricultural Hall.
1882 Waterwitch Pump. See illustration.
1888 Acquired by Blundell's London Copper and Brass Works