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发明名称
ULTRASONIC TRANSDUCER
摘要
申请公布号
GB9024981(D0)
申请公布日期
1991.01.02
申请号
GB19900024981
申请日期
1990.11.16
申请人
WELDING INSTITUTE, THE;JOHNSON MATTHEY PLC
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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