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发明名称
Calculating machine
摘要
申请公布号
US1874700(A)
申请公布日期
1932.08.30
申请号
US19280317431
申请日期
1928.11.05
申请人
EDNA B. GARDNER;GARDNER COMPANY
发明人
分类号
G06C11/00
主分类号
G06C11/00
代理机构
代理人
主权项
地址
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