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经营范围
发明名称
Telegraph apparatus
摘要
申请公布号
US1759026(A)
申请公布日期
1930.05.20
申请号
US19270233411
申请日期
1927.11.15
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
TERRIBERRY WARREN S.
分类号
H04L13/06
主分类号
H04L13/06
代理机构
代理人
主权项
地址
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