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发明名称
METHODS AND MEANS FOR INSPECTING MATERIALS BY WAVE TRAINS
摘要
申请公布号
CA476318(A)
申请公布日期
1951.08.21
申请号
CAD476318
申请日期
申请人
SPERRY PRODUCTS
发明人
RALPH BENJAMIN DE LANO, JR.
分类号
主分类号
代理机构
代理人
主权项
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