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经营范围
发明名称
RING BINDER FOLLOWER
摘要
申请公布号
CA434889(A)
申请公布日期
1946.05.21
申请号
CAD434889
申请日期
申请人
THE HEINN COMPANY
发明人
CHARLES H. FRANZ, JR.
分类号
主分类号
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