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(11) | EP 1 273 711 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Service apparatus particularly for road, railroad, subway tunnels or the like |
(57) A service apparatus (10) particularly for road, railroad, subway tunnels or the like,
comprising a frame (11) for supporting means for cleaning at least one longitudinal
portion of a wall (12) of a tunnel (13); the frame is associated with guiding means
(27a,27b) and with means for advancement along the longitudinal extension of the tunnel,
adjacent to the wall portion. |