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Individual
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Individual
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Priority to ES0020267UpriorityCriticalpatent/ES20267Y/en
Publication of ES20267UpublicationCriticalpatent/ES20267U/en
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Publication of ES20267YpublicationCriticalpatent/ES20267Y/en
Conveying And Assembling Of Building Elements In Situ
(AREA)
Abstract
New borer apparatus made of marble and similar materials, characterized in that it consists of a tube inside which a coil spring is housed, said tube finishing on its upper part in a handle and having a cylindrical bar provided with a groove at its other end. thread that ends in a mandrel where the bit is held. (Machine-translation by Google Translate, not legally binding)
ES0020267U1949-07-151949-07-15
Drilling apparatus for marble and similar materials.
ExpiredES20267Y
(en)