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发明名称
PIEZOELECTRIC DEVICE FOR SURFACE ACOUSTIC WAVE FILTER
摘要
申请公布号
KR1019940011748(B1)
申请公布日期
1994.12.23
申请号
KR1019890004328
申请日期
1989.03.31
申请人
发明人
分类号
主分类号
代理机构
代理人
主权项
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