FIELD: stationary. SUBSTANCE: folder has front sheet and rear sheet made from rigid material and connected by means of flexible backbone. At least one of sheets has fold directed inside and held at its side edges by means of connecting parts at some distance from sheet to which this fold is secured. Connecting parts are secured to sheet and to fold by means of mechanical connections. Folder is provided with retainers to avoid slackening of mechanical connections. EFFECT: ease of transportation and storage of folder, as well as change of its thickness through replacement of connecting parts. 9 cl, 10 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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RU2359835C2 |
