ES166124A1 - PerfeCCIONAMIENTOS eN el procedimiento de fabricacion de tubos centrifugados, principalmente de fibro-cemento o similares
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PerfeCCIONAMIENTOS eN el procedimiento de fabricacion de tubos centrifugados, principalmente de fibro-cemento o similares
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ES166124A1944-05-171944-05-17PerfeCCIONAMIENTOS eN el procedimiento de fabricacion de tubos centrifugados, principalmente de fibro-cemento o similares
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Mejoras en el procedimiento de fabricacion de tubos de fibrocemento armado o similares, preferiblemente centrifugados, apropiados para elevadas presiones