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发明名称
Method and means for preventing smutting
摘要
申请公布号
US1933161(A)
申请公布日期
1933.10.31
申请号
US19320598780
申请日期
1932.03.14
申请人
CLAYBOURN LESLIE W;SWEET CARL C
发明人
CLAYBOURN LESLIE W.;SWEET CARL C.
分类号
B41F23/06
主分类号
B41F23/06
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