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发明名称
NOISE-SUPPRESSING APPARATUS
摘要
申请公布号
CA490880(A)
申请公布日期
1953.03.03
申请号
CAD490880
申请日期
申请人
DOUGLAS J. W. CULLUM
发明人
DOUGLAS J. W. CULLUM
分类号
主分类号
代理机构
代理人
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