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发明名称
Loose-leaf display calendar
摘要
申请公布号
US2626819(A)
申请公布日期
1953.01.27
申请号
US19510217464
申请日期
1951.03.26
申请人
BROWN & BIGELOW
发明人
WINFORD ORION P.
分类号
B42D5/04
主分类号
B42D5/04
代理机构
代理人
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