Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 137,331 pages of information and 220,558 images on early companies, their products and the people who designed and built them.
of 52 Queen Victoria Street, London, EC, and 20, Mount Street, Manchester, Engineers and Manufacturers of Water Softening, Purifying and Filtering Plants, Oil Separators and Separated Oil Purifiers.
Business established by Jens Jacob Lassen and Vilhelm Frederick Hjort
1908 Silver Medal, Franco-British Exhibition.
1914 Engineers and manufacturers of water softening, purifying and filtering plants for town supplies, technical industrial application and boiler feeding.