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发明名称
Telephone system
摘要
申请公布号
US2313815(A)
申请公布日期
1943.03.16
申请号
US19400362521
申请日期
1940.10.24
申请人
THE GENERAL ELECTRIC COMPANY LIMITED
发明人
FAIRBAIRN ERIC PLAYFAIR
分类号
H04M1/76
主分类号
H04M1/76
代理机构
代理人
主权项
地址
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