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经营范围
发明名称
Safety pin
摘要
申请公布号
US2353560(A)
申请公布日期
1944.07.11
申请号
US19430514103
申请日期
1943.12.13
申请人
HARPER JOHN W
发明人
HARPER JOHN W.
分类号
A44B9/14
主分类号
A44B9/14
代理机构
代理人
主权项
地址
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