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发明名称
Means for visually segregating columned entries
摘要
申请公布号
US2090102(A)
申请公布日期
1937.08.17
申请号
US19360098053
申请日期
1936.08.26
申请人
BRAYTON PEARL A
发明人
BRAYTON PEARL A.
分类号
B42D12/00
主分类号
B42D12/00
代理机构
代理人
主权项
地址
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