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发明名称
Communication system employing pulse code modulation
摘要
申请公布号
US2531846(A)
申请公布日期
1950.11.28
申请号
US19470734372
申请日期
1947.03.13
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
GOODALL WILLIAM M.
分类号
H04B14/04
主分类号
H04B14/04
代理机构
代理人
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