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经营范围
发明名称
Rohr für Bodenentwässerungszwecke
摘要
申请公布号
AT259463(B)
申请公布日期
1968.01.10
申请号
AT19650000267
申请日期
1965.01.14
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N. V.
发明人
分类号
E02B11/00
主分类号
E02B11/00
代理机构
代理人
主权项
地址
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