| 摘要 |
Improvements in the production of multiple documents with duplication-accepting cards, comprising the creation of an assembly formed of a card chemically-treated so as to accept duplication on both faces, attaching to each of them a variable number of duplicating sheets with the corresponding forms to be completed and concerning the same dossier, by means of which the card picks up all this data on both faces, becoming an archival card with complete data, without the requirement of using two cards when the quantity of data requires the use of two file cards for the same dossier.
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