Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 162,367 pages of information and 244,505 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 Leeds
1951 Acquired by R. W. Crabtree and Sons.[1]
1965 Crabtree was acquired by Vickers
1967 James R Denner patented a photographic enlarger for half-tone colour printing; the patent was assigned to the company.
1969 Vickers Printing Machinery acquired Algraphy of Orpington, maker of litho plates and chemicals[2]
1979 Howson Algraphy Group performed well[3]
1989 Howson Algraphy was sold to Du Pont which made complementary products[4]
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