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发明名称
Testing apparatus
摘要
申请公布号
US1922792(A)
申请公布日期
1933.08.15
申请号
US19320602027
申请日期
1932.03.30
申请人
CAIN EDWARD H
发明人
CAIN EDWARD H.
分类号
主分类号
代理机构
代理人
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