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发明名称
APPARATUS FOR DETECTING THE THICKNESS OF MATERIALS
摘要
申请公布号
CA317495(A)
申请公布日期
1931.11.24
申请号
CAD317495
申请日期
申请人
THE WESTERN ELECTRIC COMPANY
发明人
ERNST ADOLPH GUILLEMIN
分类号
主分类号
代理机构
代理人
主权项
地址
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