Controlled Heat and Air
of Grosvenor Place, London, SW1. Telephone: Sloane 5629. Telegraphic Address: "Trollair, Knights"
1937 British Industries Fair Advert as part of Incandescent Furnace Group. Designers and Manufacturers of Continuous Conveyor and Batch Type Ovens for all Industrial Finishes and Drying Processes. (Engineering/Metals/Quarry, Roads and Mining/Transport Section - Stand Nos. D.327 and D.226)
1952 Patent - An improved apparatus for filtering dust from gases.
1955 Patent - Improvements in air or gas heaters with heat storage means.
Sources of Information
- The Times, 15 November 1961
- The Times, 18 July 1963