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发明名称
Differential counter
摘要
申请公布号
US2974862(A)
申请公布日期
1961.03.14
申请号
US19570678184
申请日期
1957.08.14
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
EICHORN ROBERT N.
分类号
G06M3/02;G06M7/06
主分类号
G06M3/02
代理机构
代理人
主权项
地址
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