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发明名称
MARGIN CONTROL STRUCTURE
摘要
申请公布号
US3572487(A)
申请公布日期
1971.03.30
申请号
USD3572487
申请日期
1969.05.01
申请人
SINGER CO.:THE
发明人
DONALD L. ROLPH;RONALD TRISTRAM
分类号
B41J29/50;(IPC1-7):B41J21/02
主分类号
B41J29/50
代理机构
代理人
主权项
地址
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