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发明名称
PIPE GUIDE APPARATUS OF METHOD OF PROPULSIVE CONSTRUCTION
摘要
申请公布号
JPS54149211(A)
申请公布日期
1979.11.22
申请号
JP19780057308
申请日期
1978.05.15
申请人
TONE BORING CO
发明人
ICHIHARA KENICHI;HIROHATA YUKINORI;KOBAYASHI HIROYASU
分类号
E21D9/093
主分类号
E21D9/093
代理机构
代理人
主权项
地址
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