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William Alfred Cammell
George Cooper
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Publication of GB190823927ApublicationCriticalpatent/GB190823927A/en
23,927. Cammell, W. A., and Cooper, G. Nov. 9. Spiked plates.-A metal bar provided with nail holes &c. d and teeth e is given a partial or one or more twists.
GB190823927D1908-11-091908-11-09Improved Hangers for Beams, Rafters, and other Timbers in Buildings.
ExpiredGB190823927A
(en)