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发明名称
Metal spiral staircase
摘要
The invention relates to a metal spiral staircase with a cylinder 1. Each of the steps 2 of the staircase is fixed to a step support 3 which is firmly fixed to the cylinder essentially by penetration inside the latter. <IMAGE>
申请公布号
FR2574457(A1)
申请公布日期
1986.06.13
申请号
FR19840018796
申请日期
1984.12.06
申请人
DAVID MICHEL
发明人
分类号
E04F11/032;(IPC1-7):E04F11/12;E04F11/02
主分类号
E04F11/032
代理机构
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