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Individual
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Individual
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Priority to ES0012718UpriorityCriticalpatent/ES12718Y/en
Publication of ES12718UpublicationCriticalpatent/ES12718U/en
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Publication of ES12718YpublicationCriticalpatent/ES12718Y/en
For an auger for pneumatic and electric drilling machines forged in a hexagonal steel bar, with axial hole that is characterized by the mouth has two radial edges that advance in the direction of work forming a slightly obtuse angle whose vertex coincides with the axis of the auger. (Machine-translation by Google Translate, not legally binding)
ES0012718U1946-03-091946-03-09
Auger for drilling machines, pneumatic and electric.
ExpiredES12718Y
(en)
Installation for the work of completion of the surface of cylindrical wrapping of a drill and an axial conical surface (Machine-translation by Google Translate, not legally binding)