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发明名称
ULTRASCHALLWANDLERVORRICHTUNG MIT EINER ANORDNUNG VON PIEZOELEKTRISCHEN WANDLERELEMENTEN.
摘要
申请公布号
DE3579039(D1)
申请公布日期
1990.09.13
申请号
DE19853579039
申请日期
1985.05.10
申请人
N.V. PHILIPS' GLOEILAMPENFABRIEKEN, EINDHOVEN, NL
发明人
COURSANT, ROGER HENRI, F-75007 PARIS, FR
分类号
H04R17/00;B06B1/06;G01N29/04;G01N29/24;(IPC1-7):G10K11/34
主分类号
H04R17/00
代理机构
代理人
主权项
地址
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