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发明名称
PERFEZIONAMENTO NEGLI AMPLIFICATORI TELEFONICI
摘要
申请公布号
IT1029866(B)
申请公布日期
1979.03.20
申请号
IT19750048347
申请日期
1975.02.25
申请人
SPANEL ABRAM N
发明人
分类号
H04M1/21;H04M1/215;H04M1/656;H04M15/30;(IPC1-7):H04M/
主分类号
H04M1/21
代理机构
代理人
主权项
地址
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