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发明名称
Récepteur de sons électromagnétique
摘要
申请公布号
FR1129802(A)
申请公布日期
1957.01.28
申请号
FRD1129802
申请日期
1955.08.16
申请人
发明人
SCHOEPS KARL
分类号
H04R11/04
主分类号
H04R11/04
代理机构
代理人
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