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发明名称
Testing machine for ball bearings
摘要
申请公布号
US2608090(A)
申请公布日期
1952.08.26
申请号
US19480041255
申请日期
1948.07.29
申请人
BARKER VIRGIL D;HUDSON CLOUGH D
发明人
BARKER VIRGIL D.;HUDSON CLOUGH D.
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