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James Marshall
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Individual
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Publication of GB189921726ApublicationCriticalpatent/GB189921726A/en
21,726. Marshall, J. Oct. 31. Bricks for the flat arches of buildings, floors, bridges, &c., are formed with tapered interlocking tongues a and recesses b, which may extend half the depth of the brick as shown in Fig. 1, or the whole depth as shown in Fig. 2.
GB189921726D1899-10-311899-10-31Improvements in and relating to Bricks for Building Flat Arches and the like.
ExpiredGB189921726A
(en)