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AQUILINO MENDIZABAL S A
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AQUILINO MENDIZABAL S A
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Application filed by AQUILINO MENDIZABAL S AfiledCriticalAQUILINO MENDIZABAL S A
Priority to ES0047783UpriorityCriticalpatent/ES47783U/es
Publication of ES47783UpublicationCriticalpatent/ES47783U/es
Tornillo auto-roscador, caracterizado por que longitudinalmente, profundizando su fileteado y la parte conveniente de su núcleo, lleva unas ranuras helicoidales, de mucho mayor paso que su roscado, adecuadas para acumular la viruta y bloquear el retroceso.
ES0047783U1955-05-031955-05-03Tornillo auto roscador
PendingES47783U
(es)