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Expired
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Eugene Ferrand
Theophile Pradeau
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Individual
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Individual
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Publication of GB190724805ApublicationCriticalpatent/GB190724805A/en
24,805. Ferrand, E., and Pradeau, T. Nov. 8. Building - blocks.-In constructing a concrete floor, permanent hollow plaster blocks A, reinforced by metallic rods D and with or without internal webs, are laid on temporary supports and concrete B is then filled in between and above the blocks. The blocks may be used as ventilators, conduits, or passages for pipes.
GB190724805D1907-11-081907-11-08Improvements in the Construction of Concrete Floors and Ceilings.
ExpiredGB190724805A
(en)