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发明名称
Elektrisches Tonwiedergabegeraet
摘要
申请公布号
DE1093825(B)
申请公布日期
1960.12.01
申请号
DE1957G022770
申请日期
1957.08.19
申请人
VIVIAN CLELAND GRAY
发明人
GRAY VIVIAN CLELAND
分类号
H04R1/28
主分类号
H04R1/28
代理机构
代理人
主权项
地址
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