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Individual
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Priority to ES0052197UpriorityCriticalpatent/ES52197Y/en
Publication of ES52197UpublicationCriticalpatent/ES52197U/en
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Publication of ES52197YpublicationCriticalpatent/ES52197Y/en
New bookbinding pastes, essentially characterized by the fact that they are constituted by a sheet of plastic material that is sensibly rigid, covered by a laminar cover of flexible plastic resin material, joined together by electronic welding, both pastes being linked by an area flexible without soul, between which a printed sheet is disposed. (Machine-translation by Google Translate, not legally binding)
ES0052197U1956-01-201956-01-20
New pastes for bookbinding
ExpiredES52197Y
(en)