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Richard Crittall and Co Heating, ventilating and air conditioning engineers, of Great Portland Street, London; of Bush House, London, WC2.
1883 Business founded
1911 Private company incorporated to acquire the business
1911 Installed their patented system of panel warming incorporating fresh air ventilation in the Royal Liver Building in Liverpool
1945 Company made public.
1946 Subsidiary companies:
1947 Richard Crittall Mechanizations was formed - mechanical and consulting engineers
1947 Factories at Brentford, Chiswick, Kensington, Stoke-on-Trent and Glasgow
1948 Receiver appointed to manage the company
1949 Reconstruction had been completed and new managers appointed
By the mid-1950s the company was profitable and expanding
1960 Acquired Maddock and Wright, heating and ventilation engineers of Leicester; was working with William Beardmore and Co to develop the Beardmore-Crittall radiant heating system for hospitals, schools, offices, etc
1961 Heating, ventilating, air-conditioning, electrical and marine engineers with works and branches throughout United Kingdom.
Mid 1960s Acquired Z. D. Berry and Sons
1967 Richard Crittall Holdings merged its subsidiaries Richard Crittall and Co and Z. D. Berry and Sons, both of which were involved in engineering and contracting, into one unit called Richard Crittall and Z. D. Berry, in order to respond to the increase in size of contracts offered
1973 Wheeler Crittall Berry was joined with Furse Installations to become Crown House Engineering