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发明名称
Loud speaker
摘要
申请公布号
US1918995(A)
申请公布日期
1933.07.18
申请号
US19300446264
申请日期
1930.04.22
申请人
TEN PAS FRANSISCUS JOHANNES
发明人
PAS FRANSISCUS JOHANNES TEN
分类号
H04R11/00
主分类号
H04R11/00
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代理人
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