Grace's Guide To British Industrial History

Registered UK Charity (No. 1154342)

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 167,818 pages of information and 247,161 images on early companies, their products and the people who designed and built them.

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.

Tok Switches: Difference between revisions

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[[Image:Tok Switches 1922HF.jpg|thumb| 1922. ]]
[[Image:Im19360605Elec-Tok.jpg|thumb| June 1936. ]]
[[Image:Im19360605Elec-Tok.jpg|thumb| June 1936. ]]



Revision as of 17:17, 1 December 2015

1922.
June 1936.

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

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

See Also

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Sources of Information