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发明名称
Electrical measuring system
摘要
申请公布号
US2383770(A)
申请公布日期
1945.08.28
申请号
US19420464914
申请日期
1942.11.07
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
CARSON ARTHUR;PAYNE IRVING
分类号
H04M3/36
主分类号
H04M3/36
代理机构
代理人
主权项
地址
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