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经营范围
发明名称
Beton-Sparrendach
摘要
申请公布号
DE839086(C)
申请公布日期
1952.05.15
申请号
DE1948P021637
申请日期
1948.11.13
申请人
ERNST BALSER
发明人
分类号
E04B7/04
主分类号
E04B7/04
代理机构
代理人
主权项
地址
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