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经营范围
发明名称
ADAPTIVE DELTA MODULATION SYSTEM
摘要
申请公布号
US3628148(A)
申请公布日期
1971.12.14
申请号
USD3628148
申请日期
1969.12.23
申请人
BELL TELEPHONE LABORATORIES INC.
发明人
STEPHEN J. BROLIN
分类号
H03M3/02;(IPC1-7):H03K13/22
主分类号
H03M3/02
代理机构
代理人
主权项
地址
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