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发明名称
PIEZO-ELECTRIC TRANSDUCER TEST APPARATUS
摘要
申请公布号
GB8908181(D0)
申请公布日期
1989.06.01
申请号
GB19890008181
申请日期
1989.04.12
申请人
MARCONI COMPANY LIMITED, THE
发明人
分类号
G01H3/00
主分类号
G01H3/00
代理机构
代理人
主权项
地址
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