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经营范围
发明名称
Articulation pour soutènements métalliques en arc ou en polygone
摘要
申请公布号
FR1111877(A)
申请公布日期
1956.03.06
申请号
FRD1111877
申请日期
1954.11.06
申请人
WESTFALENHUETTE A. G.;LORENZ-POLYGON-AUSBAU G. M. B. H.
发明人
分类号
E21D11/24
主分类号
E21D11/24
代理机构
代理人
主权项
地址
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