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 148,151 pages of information and 233,681 images on early companies, their products and the people who designed and built them.

International Janitor

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February 1968.

of Camberley

1967 Powell Duffryn Heating was merged with International Boilers and Radiators in a company that was jointly owned with Booker Group[1], called International Janitor.

1968 Electric convector heater

1969 Thorn Electrical Industries acquired the company from its 2 owners who could not provide sufficient support for its central heating developments[2]

See Also


Sources of Information

  1. The Times, Sep 07, 1967
  2. The Times , Aug 21, 1969