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发明名称
Means for ultrasonic inspection of rail
摘要
申请公布号
US3028751(A)
申请公布日期
1962.04.10
申请号
US19550556175
申请日期
1955.12.29
申请人
JOY IVAN L
发明人
JOY IVAN L.
分类号
G01N29/265
主分类号
G01N29/265
代理机构
代理人
主权项
地址
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