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发明名称
CONCRETE WELL SCREEN
摘要
申请公布号
CA539758(A)
申请公布日期
1957.04.23
申请号
CAD539758
申请日期
申请人
GEORGE F. LILLIE;WALLACE E. LILLIE
发明人
WALLACE E. LILLIE;GEORGE F. LILLIE
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