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发明名称
Switching mechanism
摘要
申请公布号
US2023589(A)
申请公布日期
1935.12.10
申请号
US19340727603
申请日期
1934.05.26
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
HERSEY RALPH E.
分类号
H01H67/24;H04Q3/00
主分类号
H01H67/24
代理机构
代理人
主权项
地址
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