Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IndividualfiledCriticalIndividual
Priority to ES0065960UpriorityCriticalpatent/ES65960U/es
Publication of ES65960UpublicationCriticalpatent/ES65960U/es
Encuadernación perfeccionada para libretas y similares, caracterizada por que partiendo de un conjunto de hojas a las que se les ha practicado en uno de sus bordes una pluralidad de orificios equidistantes entre sí, se unen formando bloque por medio de un elemento rígido arrollado en hélice y formado por un alma metálica recubierta por una envolvente de material plástico.
ES0065960U1958-04-281958-04-28Encuadernación perfeccionada para libretas y similares
PendingES65960U
(es)