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发明名称
Dispositif pour transformer les ondes sonores progressives en ondes stationnaires en vue de leur reproduction microphonique
摘要
申请公布号
FR866037(A)
申请公布日期
1941.06.13
申请号
FRD866037
申请日期
1939.08.17
申请人
发明人
LAKHOVSKY GEORGES
分类号
H04R1/34
主分类号
H04R1/34
代理机构
代理人
主权项
地址
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