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发明名称
EMBEDDING OF PIPE
摘要
申请公布号
JPS5865897(A)
申请公布日期
1983.04.19
申请号
JP19810162233
申请日期
1981.10.12
申请人
KAGATAGUMI:KK
发明人
TAKEYA YOSHIKI;KOGAME SHINSUKE;OONISHI TOSHIO;FUKUDA MASARU
分类号
E21D9/06;E21B7/04;E21B7/20;E21B21/00;E21B21/06;E21D9/08
主分类号
E21D9/06
代理机构
代理人
主权项
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