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发明名称
Time controlled apparatus
摘要
申请公布号
US1926143(A)
申请公布日期
1933.09.12
申请号
US19290370960
申请日期
1929.06.14
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
EDWARDS WILLIAM H.
分类号
H04M3/12
主分类号
H04M3/12
代理机构
代理人
主权项
地址
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