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发明名称
DIAPHRAGMS
摘要
申请公布号
GB8524191(D0)
申请公布日期
1985.11.06
申请号
GB19850024191
申请日期
1985.10.01
申请人
SONY CORPORATION
发明人
分类号
H04R7/02;(IPC1-7):H04R7/06
主分类号
H04R7/02
代理机构
代理人
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地址
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