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发明名称
Stahlbetonbalken
摘要
申请公布号
DE805710(C)
申请公布日期
1951.05.28
申请号
DE1948P017426
申请日期
1948.10.08
申请人
WILLI HOLGERSSON
发明人
HOLGERSSON WILLI
分类号
E04C3/29
主分类号
E04C3/29
代理机构
代理人
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地址
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