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发明名称
Extendable member
摘要
申请公布号
AU2008235258(A1)
申请公布日期
2008.10.16
申请号
AU20080235258
申请日期
2008.04.04
申请人
PETER GRAY
发明人
PETER ANDREW GRAY
分类号
E21D20/00;B23B45/00;E21B3/00;E21D21/00
主分类号
E21D20/00
代理机构
代理人
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