Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 162,257 pages of information and 244,499 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.
Presumed connection with Technograph Printed Circuits
A leading maker of printed circuit boards
1963 The printed circuit interests of Telegraph Condenser Co were merged with Technograph and the company renamed Technograph and Telegraph[1]
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