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William Matthew Ducker
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Individual
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Individual
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Publication of GB190504218ApublicationCriticalpatent/GB190504218A/en
4218. Ducker, W. M. March 1. Shafts.-In portable houses, the ceiling 18 is carried by beams 15, 16, which, together with. the wall plate 2, are provided with holes 19 to allow air to circulate.
GB190504218D1905-03-011905-03-01Improvements in and relating to Roofs for Portable Houses.
ExpiredGB190504218A
(en)