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 145,998 pages of information and 231,554 images on early companies, their products and the people who designed and built them.

Tok Switches

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1922.
June 1936.
31st December 1937.

of Granville House, Arundel Street, London W.C.2.

of Bloomfield Road, Woolwich, S.E.18.

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