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发明名称
Electrical measuring device
摘要
申请公布号
US1982766(A)
申请公布日期
1934.12.04
申请号
US19330691074
申请日期
1933.09.26
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
SCHREIBER ERNST HOFER
分类号
G06G7/18;H04B3/46
主分类号
G06G7/18
代理机构
代理人
主权项
地址
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