Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,369 pages of information and 233,846 images on early companies, their products and the people who designed and built them.

Electro Dynamic Construction Co

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September 1933.
April 1952.
1955. 'Maintaining Service and Safety at London Airport, Heathrow.
1966. DC/AC Motor Generator. Exhibit at Western Australian Maritime Museum.
1966. DC/AC Motor Generator. (Detail). Exhibit at Western Australian Maritime Museum.

of St Mary Cray, Kent. Control gear works at Bridgewater.

1920 Private company.

1925 Maker of variable speed electric motors

1937 Manufacturers of light-weight dynamos and motors.[1]

1961 Manufacturers of electrical equipment, dynamos and armature winders.[2]

1961 Amalgamated Industrials acquired the whole of the ordinary capital of Electro Dynamic Construction Co[3]

1963 Bought several holding companies in the field of sub-fractional horsepower motors[4]:

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