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发明名称
An expendible bit for the installation of horizontal drains for preventing lands-lides
摘要
申请公布号
IN174777(B)
申请公布日期
1995.03.04
申请号
IN1988DE67419
申请日期
1988.08.04
申请人
COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH RAFI MARG
发明人
NATARA-JAN TOPPUR KRISHNASWAMY;AKELLA VENKATA SRI RAMACHANDRA MURTY;CHANDRA DEEP;MASCARENHAS, OSWAL, D.
分类号
E21B10/44;E21B10/64;(IPC1-7):E21B10/44
主分类号
E21B10/44
代理机构
代理人
主权项
地址
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