Abstract: This invention is a box with safety locks on its lid and an integrated cardholder for storing documents. The reinforced filing box with safety lock on the lid and integrated cardholder is designed in such a way as to be assembled from a one-piece template of any laminated material, without having to staple, glue or otherwise join it, which provides resistance to the load placed upon it, according to the needs of the use to be fulfilled. The box can be assembled with fewer sides if necessary. Said box has safety locks that once shut will not let the lid remain open, thus providing maximum protection against the entrance of dust or pests. This box has no incision on the inside that passes to the outside, including the incision for the handles, and it also has a protective flange so as not to damage one's fingers, which allows for the documents to be safe from external agents that may damage them.

Abstract: This invention is an extendable elastic document fastener for fastening from one single document to any amount or thickness required, because its elastic string can be obtained in every length required and its ends can be given a pointed shape to pass them more easily through the documents. Fastening is carried out in a practical and quick manner and without damaging the documents, since one can add or extract documents practically at any time. This fastener is very resistant and adaptable to all types of climates. It will not stain the documents because it is not made of metal. It eliminates the need for stitching and for traditional fasteners, which, as I have learned from experience, damages the documents. It saves time and costs and reduces damages to the documents; it is adequate for conserving any type of archives.