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经营范围
发明名称
Electronic calculating device
摘要
申请公布号
US2404106(A)
申请公布日期
1946.07.16
申请号
US19430498511
申请日期
1943.08.13
申请人
RADIO CORPORATION
发明人
JR. RICHARD L. SNYDER,
分类号
G06F7/498;G06F7/50;H01J31/04;H03K29/00
主分类号
G06F7/498
代理机构
代理人
主权项
地址
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