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TEIXERA DE ALMEIDA NELSON
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TEIXERA DE ALMEIDA NELSON
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Application filed by TEIXERA DE ALMEIDA NELSONfiledCriticalTEIXERA DE ALMEIDA NELSON
Priority to ES89393UpriorityCriticalpatent/ES89393Y/en
Publication of ES89393UpublicationCriticalpatent/ES89393U/en
Application grantedgrantedCritical
Publication of ES89393YpublicationCriticalpatent/ES89393Y/en
Ring for loose-leaf notebooks, consisting of two cylindrical segments, concentric and separable, characterized essentially by the fact that the exterior is provided on its internal surface at a point diametrically opposite to that of its opening, a curved rim, parallel to the both the curvature of the segment itself and whose thickness corresponds exactly to the thickness of the extremities of the outer segment and finally by the fact that the said flanges fit perfectly with the extremities of the two segments, forming perfectly uniform and continuous curved surfaces. (Machine-translation by Google Translate, not legally binding)
ES89393U1961-10-091961-10-09
Loose-leaf notebook ring
ExpiredES89393Y
(en)
Device for the obtaining of a homogeneous unión of the section surfaces of a radial and unilaterally sectioned gasket ring. (Machine-translation by Google Translate, not legally binding)