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摘要
申请公布号
US2587693(A)
申请公布日期
1952.03.04
申请号
US19470742092
申请日期
1947.04.17
申请人
CATERPILLAR TRACTOR CO.
发明人
BURKS GEORGE E.;ROBINSON RONALD R.
分类号
B01D27/06
主分类号
B01D27/06
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