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发明名称
Safety heel
摘要
申请公布号
US2157184(A)
申请公布日期
1939.05.09
申请号
US19370170940
申请日期
1937.10.25
申请人
JOHN NEUMANN
发明人
NEUMANN JOHN
分类号
A43B21/06
主分类号
A43B21/06
代理机构
代理人
主权项
地址
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