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发明名称
Dental floss holder
摘要
申请公布号
US2354454(A)
申请公布日期
1944.07.25
申请号
US19440527431
申请日期
1944.03.21
申请人
GEFFNER SAMUEL H
发明人
GEFFNER SAMUEL H.
分类号
A61C15/04
主分类号
A61C15/04
代理机构
代理人
主权项
地址
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