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Individual
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Individual
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Priority to ES0268369ApriorityCriticalpatent/ES268369A1/en
Publication of ES268369A1publicationCriticalpatent/ES268369A1/en
Perforating, Stamping-Out Or Severing By Means Other Than Cutting
(AREA)
Materials For Medical Uses
(AREA)
Abstract
Perfeccionamientos in the drilling of the holes, consisting of which is jacked, having its axis in coincidence with the hole, a short tube, of any material of sufficient strength and internal diameter equal to or slightly higher than the hole to be drilled, which avoids collapses and that the perforation can get stuck with the same material removed. (Machine-translation by Google Translate, not legally binding)
ES0268369A1961-06-191961-06-19Improvements in the drilling of the barrenos (Machine-translation by Google Translate, not legally binding)
ExpiredES268369A1
(en)