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发明名称
Thread marker
摘要
申请公布号
US2544757(A)
申请公布日期
1951.03.13
申请号
US19470748862
申请日期
1947.05.17
申请人
SAMUEL ISAACSON
发明人
ISAACSON SAMUEL
分类号
D05B35/12
主分类号
D05B35/12
代理机构
代理人
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