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发明名称
Universal ultrasonic sending and receiving apparatus
摘要
申请公布号
US2956185(A)
申请公布日期
1960.10.11
申请号
US19580745580
申请日期
1958.06.30
申请人
ALUMINUM COMPANY OF AMERICA
发明人
STOCKER SELMER G. VON
分类号
G01N29/28
主分类号
G01N29/28
代理机构
代理人
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地址
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