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发明名称
SAND FILTER
摘要
申请公布号
YU53078(A)
申请公布日期
1982.06.30
申请号
YU19780000530
申请日期
1978.03.07
申请人
STELCER JOSIP
发明人
STELCER JOSIP;STELCER JOSIP
分类号
E21B43/02;(IPC1-7):E21B43/02
主分类号
E21B43/02
代理机构
代理人
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地址
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