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发明名称
Teletypewriter system
摘要
申请公布号
US2154547(A)
申请公布日期
1939.04.18
申请号
US19350053950
申请日期
1935.12.11
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
WALKER CHARLES R.
分类号
H01H67/26
主分类号
H01H67/26
代理机构
代理人
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