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发明名称
VARIABLE ANGLE ULTRASONIC SEARCH UNIT
摘要
申请公布号
CA519529(A)
申请公布日期
1955.12.13
申请号
CAD519529
申请日期
申请人
SPERRY PRODUCTS
发明人
HOWARD E. VAN VALKENBURG
分类号
主分类号
代理机构
代理人
主权项
地址
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