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发明名称
Perfectionnements à la construction des routes formées d'un liant goudronneux et à la fabrication du tarmacadam
摘要
申请公布号
FR36896(E)
申请公布日期
1930.08.25
申请号
FRD36896
申请日期
1929.02.18
申请人
发明人
LEFEBVRE CHARLES-GEORGES-JULE;BERGER ERNEST-EDOUARD-FREDE
分类号
E01C7/35
主分类号
E01C7/35
代理机构
代理人
主权项
地址
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