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发明名称
MELHORAMENTOS EM OU RELATIVOS A SISTEMAS TELEFONICOS
摘要
申请公布号
BR7800584(A)
申请公布日期
1978.10.24
申请号
BR19780000584
申请日期
1978.01.31
申请人
INT STANDARD ELECTRIC CORP
发明人
LAWSON A
分类号
H04B5/00;(IPC1-7):H04M3/42
主分类号
H04B5/00
代理机构
代理人
主权项
地址
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