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Individual
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Individual
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Priority to ES0162993ApriorityCriticalpatent/ES162993A2/es
Publication of ES162993A2publicationCriticalpatent/ES162993A2/es
Mejoras en el objeto de la patente principal núm. 162.549 esencialmente caracterizadas porque la superficie de transmisión del movimiento variable al plegador puede ser una superficie que en términos generales puede definirse por permitir desarrollar sobre ella o ser trazada una espiral de paso constante o en otros términos que dichas superficies puedan ser engendradas por un espiral de paso constante o hélice por ejemplo: una superficie cónica.
ES0162993A1943-09-061943-09-06Mejoras en el objeto
ExpiredES162993A2
(es)