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发明名称
Piste composée de couches de matériaux perméables à l'eau de constitutions différentes
摘要
申请公布号
FR810675(A)
申请公布日期
1937.03.26
申请号
FRD810675
申请日期
1936.09.19
申请人
发明人
ALEXANDER OSCAR
分类号
E01C13/02
主分类号
E01C13/02
代理机构
代理人
主权项
地址
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