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发明名称
DRAIN FILTER
摘要
申请公布号
CA807469(A)
申请公布日期
1969.03.04
申请号
CAD807469
申请日期
申请人
WEST COAST FOUNDATION DRILLING CO. LTD.
发明人
REGINALD C. THURBER
分类号
主分类号
代理机构
代理人
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