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经营范围
发明名称
Pipe propelling apparatus
摘要
申请公布号
US4830539(A)
申请公布日期
1989.05.16
申请号
US19880241964
申请日期
1988.09.08
申请人
KABUSHIKI KAISHA ISEKI KAIHATSU KOKI
发明人
AKESAKA, TOSHIO
分类号
E21D9/06;E21B7/20;F16L1/06
主分类号
E21D9/06
代理机构
代理人
主权项
地址
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