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发明名称
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摘要
申请公布号
US2625908(A)
申请公布日期
1953.01.20
申请号
US19500156985
申请日期
1950.04.20
申请人
FRED T. HARSH;JAMES D. HARSH;FRED T. HARSH, JR.
发明人
KNOTT CHARLES W.
分类号
B41J29/15
主分类号
B41J29/15
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