Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 126,199 pages of information and 197,878 images on early companies, their products and the people who designed and built them.
of Ruislip, Middlesex.
1935 Became private company.
1961 Manufacturer of the Velovent air conditioning system under licence from Sweden.
1961 Air conditioning and heating engineers. Land and marine specialists in equipment in connection with heating, ventilation, humidification, pneumatic conveying, dust extraction, drying and electro-precipitation. 580 employees.