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发明名称
METHOD AND DEVICE FOR PREVENTING BACK OF PROPULSION PIPE
摘要
申请公布号
JPH09328990(A)
申请公布日期
1997.12.22
申请号
JP19960168178
申请日期
1996.06.07
申请人
TAISEI CORP
发明人
MASUDA TADAKAZU
分类号
E21D9/06;(IPC1-7):E21D9/06
主分类号
E21D9/06
代理机构
代理人
主权项
地址
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