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Elemento constructivo para la fabricación de conductos de desagüe abiertos o cerrados resistentes al empuje ascensional del tipo que comprende un fondo y unos laterales constituidos con un hormigón altamente poroso y/o impermeable caracterizado porque las paredes laterales son desplazables y están sujetas en el fondo y entre si respectivamente por medio de uniones macho y hembra.
ES111050U1964-02-281964-02-28Elemento constructivo para la fabricacion de conductos de desague resistentes al empuje ascensional.
ExpiredES111050Y
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Llave de conmutación de varios pasos para mando hidráulico con un macho provisto de varios conductos rectos cuyas desembocaduras yacen en distintos planos