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发明名称
INFUSION METHOD OF TRANSFUSION-MATERIAL FOR JACKING METHOD OF DOUBLE-PIPE AND THE APPARATUS FOR THE SAME
摘要
申请公布号
KR100229397(B1)
申请公布日期
1999.11.01
申请号
KR19940003085
申请日期
1994.02.22
申请人
TOKYO GAS CO., LTD.;ISEKI GAIHAS GOKI CO.,LTD
发明人
MITSUTOSHI, HAYASI;AKIDAKA, HUJITA;SINGO, NAGASHIMA;MINORU, KURASINA;MAKOTO, GAZIYAMA;HIDEKI, UNO
分类号
E21B7/20;E21B21/12;(IPC1-7):F16L1/00
主分类号
E21B7/20
代理机构
代理人
主权项
地址
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