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 142,890 pages of information and 228,796 images on early companies, their products and the people who designed and built them.

Pennine Amplifiers

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March 1949.
June 1949.
September 1949.
December 1951.

Southgate, Elland, Yorks.

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