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发明名称
Marker
摘要
申请公布号
US1958831(A)
申请公布日期
1934.05.15
申请号
US19310558759
申请日期
1931.08.22
申请人
EMIL LORENZ
发明人
LORENZ EMIL
分类号
B42F21/00
主分类号
B42F21/00
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代理人
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