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(11) | EP 1 621 715 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Frame |
(57) The invention relates to a frame comprising one or more sealing mats (5), which are
manufactured of an essentially flexible material, such as fabric, plastic or paper,
and are essentially airtight. The invention also relates to a method for manufacturing
and using this type of frame.
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