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Individual
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Individual
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Priority to ES0055180UpriorityCriticalpatent/ES55180U/es
Publication of ES55180UpublicationCriticalpatent/ES55180U/es
"UN SOBRE DE CARTAS CON MEDIOS QUE FACILITAN SU APERTURA", caracterizado por que los medios referidos consisten en proveer al sobre, en uno de sus bordes, de un hilo que pasa por dentro de este borde y cuyo extremo sobresale, de modo que basta tirar del hilo para que este, corte el papel del sobre, para lo cual el borde esté provisto de una serie de escotaduras o dientes, situados a intervalos regulares, que hacen más sencilla la operación del corte.
ES0055180U1956-07-101956-07-10Un sobre de cartas con medios que facilitan su apertura
PendingES55180U
(es)