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发明名称
Method and apparatus for reducing band requirements in transmission systems
摘要
申请公布号
US2726283(A)
申请公布日期
1955.12.06
申请号
US19490136245
申请日期
1949.12.31
申请人
INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION
发明人
TORO MICHAEL J. DI
分类号
H04B1/66
主分类号
H04B1/66
代理机构
代理人
主权项
地址
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