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(11) | EP 0 339 698 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | A strainer device for stretching a flat flexible material |
(57) The strainer device for performance of announcements and signs, which comprises a
hollow body inflated by a gas,around which a flexible plane of cloth, gauze or polymer
is clamped,such that said plane remains correctly visible in the direction as required.
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