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发明名称
LOUDSPEAKER
摘要
申请公布号
US3542149(A)
申请公布日期
1970.11.24
申请号
USD3542149
申请日期
1968.10.11
申请人
GEONICS LTD.
发明人
VAINO RONKA
分类号
H04R1/34;(IPC1-7):G01V1/00
主分类号
H04R1/34
代理机构
代理人
主权项
地址
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