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发明名称
Pavé perfectionné
摘要
申请公布号
FR776271(A)
申请公布日期
1935.01.22
申请号
FRD776271
申请日期
1933.10.11
申请人
SOCIETE GENERALE DES ETABLISSEMENTS BERGOUGNAN
发明人
分类号
E01C5/18
主分类号
E01C5/18
代理机构
代理人
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