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 167,710 pages of information and 247,104 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:Tok Switches 1922HF.jpg|thumb| 1922. ]]
[[Image:Im19360605Elec-Tok.jpg|thumb| June 1936. ]]
[[Image:Im19360605Elec-Tok.jpg|thumb| June 1936. ]]
[[image:Im19371231EE-TOK.jpg|thumb| 31st December 1937.]]


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

Latest revision as of 12:41, 7 March 2016

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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Sources of Information