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发明名称
DISPOSITIF POUR BOULONNER-DEBOULONNER TUYAUX
摘要
申请公布号
RO70103(A)
申请公布日期
1984.03.15
申请号
RO19740077375
申请日期
1974.01.23
申请人
FIRMA WEATHERFORD OIL TOOL GMBH,DE
发明人
DREYFUSS,WILFRIED,DE;OBERDORFER,HARTMUT,DE
分类号
B25B21/00;E21B19/16
主分类号
B25B21/00
代理机构
代理人
主权项
地址
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