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British Electric Transformer Co of Hayes, Middlesex.
1912 Demand for Tricity cookers had doubled since the previous 6 month period.
1912 Share issue. The company's main product was the Berry transformer invented by Mr A. F. Berry who was technical adviser to the company and a member of the board of directors; Mr Berry had also invented the Tricity cooker.
1929 Central Electricity Board placed contracts for 66kV transformers for the South East of England with Hackbridge Electric Construction Co and British Electric Transformer Co. British Electric Transformer also received contracts for 132 kV transformers for Central England and North-West England.
1932 Acquired by Crompton Parkinson.
1961 Electrical engineers and manufacturers of electrical equipment.