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发明名称
Accounting aid
摘要
申请公布号
US2573570(A)
申请公布日期
1951.10.30
申请号
US19460685030
申请日期
1946.07.20
申请人
HOWARD JR FRANK A
发明人
JR. FRANK A. HOWARD,
分类号
B41L3/02;B41L3/14;B42D12/00
主分类号
B41L3/02
代理机构
代理人
主权项
地址
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