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发明名称
Combination one-and two-digit selector switches
摘要
申请公布号
US2575780(A)
申请公布日期
1951.11.20
申请号
US19470782420
申请日期
1947.10.27
申请人
AUTOMATIC ELECTRIC LABORATORIES, INC.
发明人
BALZER HARVEY W.
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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