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发明名称
Electric selector mechanism
摘要
申请公布号
US2209998(A)
申请公布日期
1940.08.06
申请号
US19360105102
申请日期
1936.10.10
申请人
THE WESTERN UNION TELEGRAPH COMPANY
发明人
NOXON PAUL A.;MITCHELL JAMES I.
分类号
F16D63/00;H04L17/18;H04L17/22
主分类号
F16D63/00
代理机构
代理人
主权项
地址
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