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经营范围
发明名称
Elektromechanischer Wandler
摘要
申请公布号
DE2058215(A1)
申请公布日期
1971.06.03
申请号
DE19702058215
申请日期
1970.11.26
申请人
N.V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
DER WOERD,ALBERTUS CORNELIS VAN
分类号
H04R1/46;G10G7/02;G10H3/18
主分类号
H04R1/46
代理机构
代理人
主权项
地址
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