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238000010297mechanical methods and processMethods0.000title1
230000005226mechanical processes and functionsEffects0.000title1
239000010959steelSubstances0.000title1
ES28437A1901-08-311901-08-31Un procedimiento mecánico para la producción del hierro o del acero por medio de los aparatos que se describen.
ExpiredES28437A1
(es)
Un procedimiento perfeccionado para beneficiar directamente los minerales de hierro y someterlos a ulterior tratamiento para la fabricación de hierro y acero forjados por medio del aparato que se describe.
Un procedimiento perfeccionado para la formación o compresión de secciones o trozos de tuberías hechos de chapas u hojas de metal por medio del aparato que se describe.