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经营范围
发明名称
COMPOUND ULTRASONAR SONAR TRANSDUCER
摘要
申请公布号
EP0369127(A3)
申请公布日期
1991.11.06
申请号
EP19890116379
申请日期
1989.09.05
申请人
SIEMENS AKTIENGESELLSCHAFT
发明人
STEIN, DIETER, DIPL.-PHYS.
分类号
H04R1/44;B06B1/06;G01S7/521;H04R17/00;(IPC1-7):B06B1/06;G10K11/02
主分类号
H04R1/44
代理机构
代理人
主权项
地址
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