Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 162,253 pages of information and 244,496 images on early companies, their products and the people who designed and built them.
Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.
of Imperial House, Kingsway, London, W.C.2., works at Brentford.
1913 Company formed by merger of Lassen and Hjort and Water Softeners Ltd, sole proprietors of Permutit base exchange medium.
1917 Agents for Wallace and Tiernan.
1918 Agent for Lassen-Hjort and Permutit water softening plant (see advert).
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