Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 167,676 pages of information and 247,074 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.
Manufacturers of dental appliances and equipment
1924 Company formed from the merger of De Trey and Co and Claudius Ash, Sons and Co, the leading British firms making dental appliances.
1939 The factory at Walton on Thames had been modernized[1]
1967 Reconstruction of the group with a new holding company A. D. International[2]
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