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发明名称
Voice coil form
摘要
申请公布号
US1923924(A)
申请公布日期
1933.08.22
申请号
US19320626706
申请日期
1932.07.30
申请人
THE ROLA COMPANY
发明人
ENGHOLM BERNARD A.
分类号
H04R9/04
主分类号
H04R9/04
代理机构
代理人
主权项
地址
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