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发明名称
CALCULATING MACHINE
摘要
申请公布号
CA324307(A)
申请公布日期
1932.07.19
申请号
CAD324307
申请日期
申请人
THE BRITISH ADDING AND CALCULATING MACHINES LIMITED;RICHARD FITZ POWER
发明人
WILLIAM BALL
分类号
主分类号
代理机构
代理人
主权项
地址
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