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 148,103 pages of information and 233,633 images on early companies, their products and the people who designed and built them.


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of Brixton Works, Blenheim Road, London SW2

1962 Intertherm was formed jointly by Redifon, the principal manufacturing company of the Rediffusion Group and Research and Control Instruments, part of Philips Electrical Industries to pool the expertise and facilities of the 2 companies in dielectric and induction heating[1]

1966 The company was still not sufficiently profitable due to intense competition[2]

1967 Rediffusion sold its interests in the company to Philips[3]

1968 Offered plastics welding using ultrasonics[4]

1969 Intertherm was the British company of the Elphiac Group which combined the electroheating interests of Philips and ACEC[5]

See Also


Sources of Information

  1. The Times Jun 28, 1962
  2. The Times , Jul 06, 1966
  3. The Times Jul 05, 1967
  4. The Times, Sep 06, 1968
  5. The Times, Dec 30, 1969