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发明名称
Вызывное приспособление для диспетчерской телефонной связи
摘要
申请公布号
SU35871(A1)
申请公布日期
1934.04.30
申请号
SU19320100712
申请日期
1932.01.04
申请人
SHUMEJKO L.K.
发明人
SHUMEJKO L.K.
分类号
H04Q5/14;H04Q1/30
主分类号
H04Q5/14
代理机构
代理人
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