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发明名称
Elektroakustischer Wandler mit Helmholzreseonator
摘要
申请公布号
DE1025452(B)
申请公布日期
1958.03.06
申请号
DE1952M015569
申请日期
1952.09.18
申请人
STANDARD ELEKTRIK AKTIENGESELLSCHAFT
发明人
BUCHMANN GERHARD;NOPP HEINZ
分类号
H04R1/22
主分类号
H04R1/22
代理机构
代理人
主权项
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