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发明名称
Automatic telephone station selector set for transmitting station numbers
摘要
申请公布号
US2537188(A)
申请公布日期
1951.01.09
申请号
US19490087958
申请日期
1949.04.16
申请人
PIERRE KAELIN
发明人
KAELIN PIERRE
分类号
H04M1/272
主分类号
H04M1/272
代理机构
代理人
主权项
地址
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