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发明名称
PIEZOELECTRIC DETECTOR
摘要
申请公布号
JPH01188200(A)
申请公布日期
1989.07.27
申请号
JP19880010893
申请日期
1988.01.22
申请人
HITACHI LTD
发明人
WATANABE MASAHIRO
分类号
H04R17/00
主分类号
H04R17/00
代理机构
代理人
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地址
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