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发明名称
Variable typewriter spacer
摘要
申请公布号
US2512825(A)
申请公布日期
1950.06.27
申请号
US19480026403
申请日期
1948.05.11
申请人
CHAMBERS MARTIN R
发明人
CHAMBERS MARTIN R.
分类号
B41J19/32
主分类号
B41J19/32
代理机构
代理人
主权项
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