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发明名称
APPARAT TIL TILVEJEBRINGELSE AF EN UNDERJORDISK TUNNEL
摘要
申请公布号
DK245989(D0)
申请公布日期
1989.05.19
申请号
DK19890002459
申请日期
1989.05.19
申请人
FLOWMOLE CORPORATION
发明人
BAKER, GLEN OTIS;FELDMAN, DMITRY;SANG NG, SHIU;CHAU, ALBERT WING-PING;MERCER, JOHN E.
分类号
E21B4/14;E21B4/20;E21B7/04;E21B7/06;E21B7/26;E21B10/40;E21B10/58;E21D9/08;(IPC1-7):E21B7/04;E21B4/00;E21B6/00
主分类号
E21B4/14
代理机构
代理人
主权项
地址
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