(57) The operating device for folding doors according to the invention comprises posts
(2, 2') sliding along, horizontal guide runners (6, 18), pairs of doors (1, 1') articulated
between themselves along their vertical adjacent edge and articulated to said posts
(2, 2') along their opposite vertical edge, elastic means (11) keeping each pair of
door in closing position and means (3) causing the partial opening of each pair of
doors (1, 1') in opposition to the effect of said elastic means (11), as a consequence
of the folding of the preceding pair.
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