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发明名称
GRADING TAG
摘要
申请公布号
CA328953(A)
申请公布日期
1932.12.27
申请号
CAD328953
申请日期
申请人
JOHN ORMOND KER;WARD ASHTON
发明人
WARD ASHTON;JOHN ORMOND KER
分类号
主分类号
代理机构
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