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经营范围
发明名称
PIEZOELECTRIC CONVERSION ELEMENT
摘要
申请公布号
JPH02234600(A)
申请公布日期
1990.09.17
申请号
JP19890055711
申请日期
1989.03.07
申请人
MITSUBISHI MINING & CEMENT CO LTD
发明人
HIKITA KAZUYASU;KANAI HARUMI;TANAKA YOSHIAKI
分类号
H04R17/00;B06B1/06
主分类号
H04R17/00
代理机构
代理人
主权项
地址
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