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发明名称
Calculator
摘要
申请公布号
US3147915(A)
申请公布日期
1964.09.08
申请号
US19620181269
申请日期
1962.03.21
申请人
CRESSWELL JR WILLIAM A
发明人
JR. WILLIAM A. CRESSWELL,
分类号
G06G1/08
主分类号
G06G1/08
代理机构
代理人
主权项
地址
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