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摘要
申请公布号
US3146615(A)
申请公布日期
1964.09.01
申请号
US19610113863
申请日期
1961.05.31
申请人
NORBERT LEOPOLDI
发明人
LEOPOLDI NORBERT
分类号
A44B15/00
主分类号
A44B15/00
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代理人
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