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经营范围
发明名称
Card filing and segregating apparatus
摘要
申请公布号
US2002808(A)
申请公布日期
1935.05.28
申请号
US19290390373
申请日期
1929.09.04
申请人
WHITSON JOHN W
发明人
WHITSON JOHN W.
分类号
G06K21/02
主分类号
G06K21/02
代理机构
代理人
主权项
地址
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