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发明名称
Means for maintaining multiple records
摘要
申请公布号
US2470586(A)
申请公布日期
1949.05.17
申请号
US19450583947
申请日期
1945.03.21
申请人
TATHWELL JOSEPH H
发明人
TATHWELL JOSEPH H.
分类号
B42D12/02
主分类号
B42D12/02
代理机构
代理人
主权项
地址
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