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发明名称
PACKER FOR HYDRAULIC FRACTURING
摘要
申请公布号
JPH09137691(A)
申请公布日期
1997.05.27
申请号
JP19950297015
申请日期
1995.11.15
申请人
AGENCY OF IND SCIENCE & TECHNOL
发明人
NARITA TAKASHI;YAMAGUCHI TSUTOMU;KURIYAGAWA MICHIO;YAMASHITA MITSUGI
分类号
E21C37/06;E21C37/08;G01B5/14;(IPC1-7):E21C37/06
主分类号
E21C37/06
代理机构
代理人
主权项
地址
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