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发明名称
Repeater system
摘要
申请公布号
US2342586(A)
申请公布日期
1944.02.22
申请号
US19410391822
申请日期
1941.05.05
申请人
KELLOGG SWITCHBOARD AND SUPPLY COMPANY
发明人
KINER GLENN
分类号
H04M3/40
主分类号
H04M3/40
代理机构
代理人
主权项
地址
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