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经营范围
发明名称
Mouth-protective bit
摘要
申请公布号
US2483157(A)
申请公布日期
1949.09.27
申请号
US19460677182
申请日期
1946.06.17
申请人
SINGER ROSE B
发明人
SINGER ROSE B.
分类号
A63B71/08
主分类号
A63B71/08
代理机构
代理人
主权项
地址
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