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发明名称
Communicating system
摘要
申请公布号
US2206231(A)
申请公布日期
1940.07.02
申请号
US19370169067
申请日期
1937.10.14
申请人
WALLACE & TIERNAN PRODUCTS, INC.
发明人
MACKAY JOHN R.
分类号
H04L15/26;H04W52/02
主分类号
H04L15/26
代理机构
代理人
主权项
地址
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