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发明名称
FOLDING LADDER WITH MOVABLE RUNGS
摘要
<p>A ladder of which the side rails (1, 1') are connected not by fixed rungs but by movable rungs (2), by means of pins (3) which connect the rungs to the side rails via plates (4) riveted thereto.</p>
申请公布号
WO1991017338(A1)
申请公布日期
1991.11.14
申请号
CH1991000104
申请日期
1991.05.03
申请人
发明人
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主分类号
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代理人
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