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摘要
申请公布号
US2171261(A)
申请公布日期
1939.08.29
申请号
US19380223598
申请日期
1938.08.08
申请人
THE DAWN MFG. CORP.
发明人
WELTER HERMAN C.
分类号
B41J29/15
主分类号
B41J29/15
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