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发明名称
LOOSE LEAF BINDER STRUCTURE FOR CALENDAR DESK DIARY USE
摘要
申请公布号
CA883405(A)
申请公布日期
1971.10.12
申请号
CAD883405
申请日期
申请人
NATIONAL BLANK BOOK COMPANY
发明人
WILLIAM J. SIBLEY
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主分类号
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