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(11) | EP 1 520 943 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Surface drainage system |
(57) An apparatus for a surface drainage system comprises a longitudinal restrictor member
9 and at least one mounting means 10 adapted to locate the restrictor member 9 adjacent
a longitudinal drainage slot 5 of a drainage channel section. The mounting means 10
are adapted to enable movement of the restrictor member 9 relative to the slot 5 in
order to vary the effective area of the slot opening.
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