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发明名称
Improvements in loud speaker diaphragms
摘要
申请公布号
GB406327(A)
申请公布日期
1934.02.19
申请号
GB19320020346
申请日期
1932.07.18
申请人
LOHUSTA ELEKTRO-AKUSTIK G.M.B.H.
发明人
分类号
H04R7/12
主分类号
H04R7/12
代理机构
代理人
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地址
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