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发明名称
Display device for typewriters
摘要
申请公布号
US2310482(A)
申请公布日期
1943.02.09
申请号
US19400358572
申请日期
1940.09.27
申请人
INTERNATIONAL BUSINES MACHINES CORPORATION
发明人
WATSON THOMAS J.
分类号
B41J29/393
主分类号
B41J29/393
代理机构
代理人
主权项
地址
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