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发明名称
Multiplex drop channel system
摘要
申请公布号
US1927704(A)
申请公布日期
1933.09.19
申请号
US19310573930
申请日期
1931.11.09
申请人
INTERNATIONAL COMMUNICATIONS LABORATORIES, INC.
发明人
HALLDEN FREDERICK G.
分类号
H04L5/22;H04L7/00
主分类号
H04L5/22
代理机构
代理人
主权项
地址
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