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发明名称
Calculating machine
摘要
申请公布号
US2121683(A)
申请公布日期
1938.06.21
申请号
US19360118133
申请日期
1936.12.29
申请人
GARDNER COMPANY
发明人
JR. EDWIN F. BRITTEN,
分类号
G06C7/06
主分类号
G06C7/06
代理机构
代理人
主权项
地址
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