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经营范围
发明名称
Ultrasonic apparatus
摘要
申请公布号
US2883660(A)
申请公布日期
1959.04.21
申请号
US19530388579
申请日期
1953.10.27
申请人
ARENBERG DAVID L
发明人
ARENBERG DAVID L.
分类号
H03H9/30
主分类号
H03H9/30
代理机构
代理人
主权项
地址
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