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发明名称
RING BINDER
摘要
申请公布号
CA425733(A)
申请公布日期
1945.02.20
申请号
CAD425733
申请日期
申请人
TRUSSELL MFG. CO.;TRUSSELL MANUFACTURING CO.
发明人
CLARENCE DAMON TRUSSELL
分类号
主分类号
代理机构
代理人
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