Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 167,711 pages of information and 247,105 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.
1924 Company formed from the merger of De Trey and Co and Claudius Ash, Sons and Co, the leading British firms making dental appliances.
Manufacturers of dental equipment
1967 Reconstruction of the group with a new holding company A. D. International[1]
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