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发明名称
Microphone pickup and volume control
摘要
申请公布号
US2455567(A)
申请公布日期
1948.12.07
申请号
US19460709864
申请日期
1946.11.14
申请人
ROWE INDUSTRIES
发明人
ARMOND HARRY DE
分类号
G10H3/18
主分类号
G10H3/18
代理机构
代理人
主权项
地址
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