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发明名称
Perfectionnement à la couverture des constructions
摘要
申请公布号
FR953906(A)
申请公布日期
1949.12.15
申请号
FRD953906
申请日期
1947.10.07
申请人
发明人
RATHSAM OTTO GUILHERME
分类号
E04B7/02
主分类号
E04B7/02
代理机构
代理人
主权项
地址
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