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发明名称
Tuyau de drainage présentant de chaque côté une nervure longitudinale disposée au-dessus d'une série de trous
摘要
申请公布号
FR851419(A)
申请公布日期
1940.01.09
申请号
FRD851419
申请日期
1939.03.09
申请人
发明人
VERHOOG;SR. VINK;GRIENDT VAN DER
分类号
E02B11/00
主分类号
E02B11/00
代理机构
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