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PRAT DIVI EVELIO
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PRAT DIVI EVELIO
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Priority to ES0178307ApriorityCriticalpatent/ES178307A2/es
Publication of ES178307A2publicationCriticalpatent/ES178307A2/es
Modificaciones en el procedimiento para fabricar tornillos pernos y similares objeto de la patente principal que consisten en preparar cono se indica en la patente principal el vástago del tornillo y un anillo que ha de constituir la cabeza colocar correctamente este anillo sobre el extremo del vástago y luego efectuar la compresión del material del anillo sobre el vástago por medio de matrices o mordazas que obran en sentido radial comprimiendo fuertemente el material de la cabeza sobre el extremo del vástago para obtener unión perfecta de los mismos.
ES0178307A1947-05-231947-05-23Un procedimiento para fabricar tornillos pernos y similares
ExpiredES178307A2
(es)