| 摘要 |
PCT No. PCT/AU91/00478 Sec. 371 Date Jun. 7, 1993 Sec. 102(e) Date Jun. 7, 1993 PCT Filed Oct. 15, 1991 PCT Pub. No. WO92/07143 PCT Pub. Date Apr. 30, 1992.A support structure for a road warning sign comprising a pair of elongated hinged crossbar members having support leg members pivotally connected thereto at their ends, said support leg members being adapted to be swung outwardly and downwardly from a folded location along the crossbar members to a ground engaging position whereby said hingedly connected crossbar members close to secure therebetween a sheet material road sign.
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