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ES53402A1912-07-011912-07-01Un nuevo sistema de construcción de suelos de hormigón armado, la entableración o entarimado y los techos.
ExpiredES53402A2
(es)
Un nuevo sistema de construcción de suelos de hormigón armado con viguetas de perfil C y nuevo sistema de fijar a los suelos de hormigón armado la entablación o entarimado y los techos y cielos rasos.