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ETCHERVERRIA FRANCES JUANA
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ETCHERVERRIA FRANCES JUANA
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Application filed by ETCHERVERRIA FRANCES JUANAfiledCriticalETCHERVERRIA FRANCES JUANA
Priority to ES0033279UpriorityCriticalpatent/ES33279U/es
Publication of ES33279UpublicationCriticalpatent/ES33279U/es
Investigating Or Analysing Biological Materials
(AREA)
Abstract
Unas gafas prismáticas para la lectura en posición supina, en las que esencialmente la montura sostiene a dos prismas de cristal o material cristalino refractante, y centrados con los ejes de los ojos, con sus aristas longitudinales o laterales perpendiculares a dichos ejes ópticos; la sección de los prismas será triangular y tal que, por el azogado de una de sus facetas, desvíen los rayos luminosos de un ángulo aproximado a los noventa grados.
ES0033279U1952-10-281952-10-28Gafas prismáticas para la lectura en posición supina
PendingES33279U
(es)