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发明名称
Improvements in or relating to sound transducing devices
摘要
申请公布号
GB1116347(A)
申请公布日期
1968.06.06
申请号
GB19640028071
申请日期
1964.07.08
申请人
GARRARD ENGINEERING LIMITED
发明人
SIMPSON GORDON VICTOR
分类号
H04R1/16
主分类号
H04R1/16
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