Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 167,859 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.
of Portadyne Works, Gorst Road, London
1926 Manufactured by Whittingham, Smith and Co
1932 Manufactured by Portadyne Radio Ltd
1936 Manufactured by Gorst Electrical Co
From 1947 all Portodyne radios were manufactured by Dynaport Radio and Television
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