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发明名称
Sound gatherer
摘要
申请公布号
US2537201(A)
申请公布日期
1951.01.09
申请号
US19480062576
申请日期
1948.11.29
申请人
DANIELE AMFITHEATROF
发明人
AMFITHEATROF DANIELE
分类号
A61F11/00
主分类号
A61F11/00
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代理人
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