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F Rocavert Y Cia
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F Rocavert Y Cia
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Priority to ES89484ApriorityCriticalpatent/ES89484A3/es
Publication of ES89484A3publicationCriticalpatent/ES89484A3/es
ES89484A1924-05-121924-05-12Un procedimiento para formar o estampar mecánicamente en frío las cabezas de los tornillos de hierro u otros metales.
ExpiredES89484A3
(es)