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发明名称
Comparison devices
摘要
申请公布号
US3027070(A)
申请公布日期
1962.03.27
申请号
US19570665962
申请日期
1957.06.17
申请人
ADDRESSOGRAPH-MULTIGRAPH CORPORATION
发明人
SALLACH MAX E.;SMITH JOHN I.
分类号
G06F7/02
主分类号
G06F7/02
代理机构
代理人
主权项
地址
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