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发明名称
Cable code signaling system
摘要
申请公布号
US1921796(A)
申请公布日期
1933.08.08
申请号
US19320596771
申请日期
1932.03.04
申请人
INTERNATIONAL COMMUNICATIONS LABORATORIES, INC.
发明人
WOODWARD MARION H.
分类号
H03M7/40
主分类号
H03M7/40
代理机构
代理人
主权项
地址
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