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发明名称
Type aligning gauges for typewriters
摘要
申请公布号
US2785475(A)
申请公布日期
1957.03.19
申请号
US19550497743
申请日期
1955.03.29
申请人
HERBERT SIMPSON
发明人
SIMPSON HERBERT
分类号
B41J25/22
主分类号
B41J25/22
代理机构
代理人
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