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发明名称
Calculating machine table
摘要
申请公布号
US2230444(A)
申请公布日期
1941.02.04
申请号
US19390294292
申请日期
1939.09.11
申请人
ALBERT BALSTER
发明人
BALSTER ALBERT
分类号
A47B21/00;B41J29/06
主分类号
A47B21/00
代理机构
代理人
主权项
地址
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