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发明名称
Pulse code expander
摘要
申请公布号
US2738463(A)
申请公布日期
1956.03.13
申请号
US19520269561
申请日期
1952.02.01
申请人
INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION
发明人
METZGER SIDNEY
分类号
H03G7/00;H04B1/64;H04B14/04;H04J3/00
主分类号
H03G7/00
代理机构
代理人
主权项
地址
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