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发明名称
Improvements in portable sound reproduction equipment
摘要
申请公布号
GB504418(A)
申请公布日期
1939.04.25
申请号
GB19380010724
申请日期
1938.04.07
申请人
FABBRICA ITALLANA MAGNETI MARELLI
发明人
分类号
H04R1/02
主分类号
H04R1/02
代理机构
代理人
主权项
地址
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