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Hijos de Arturo Simon SA
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Hijos de Arturo Simon SA
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Application filed by Hijos de Arturo Simon SAfiledCriticalHijos de Arturo Simon SA
Priority to ES0023165UpriorityCriticalpatent/ES23165U/es
Publication of ES23165UpublicationCriticalpatent/ES23165U/es
Un tornillo especial, que esencialmente se caracteriza por haberse practicado en la región central de la cabeza del tornillo, mediante un troquel, un hueco cuyas paredes laterales están constituidas por superficies planas, cilíndricas y cónicas combinadas entre sí, siendo el fondo del hueco plano o no.