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发明名称
METHOD OF CHECKING OPERATION OF AUTOMATIC TELEPHONE EXCHANGE
摘要
申请公布号
SU1283996(A1)
申请公布日期
1987.01.15
申请号
SU19853879108
申请日期
1985.04.08
申请人
GURVICH MIKHAIL,SU
发明人
GURVICH MIKHAIL I,SU
分类号
H04M3/22
主分类号
H04M3/22
代理机构
代理人
主权项
地址
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