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经营范围
发明名称
Akustisches Filtersystem
摘要
申请公布号
DE1918065(A1)
申请公布日期
1970.10.08
申请号
DE19691918065
申请日期
1969.04.09
申请人
ZENITH RADIO CORP.
发明人
JOHN DEVRIES,ADRIAN
分类号
H03D3/16;H03H9/145;H03H9/64
主分类号
H03D3/16
代理机构
代理人
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地址
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