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发明名称
Электронный коммутатор
摘要
申请公布号
SU57448(A2)
申请公布日期
1940.11.30
申请号
SU19390001975
申请日期
1939.12.30
申请人
GONCHARSKIJ L.A.
发明人
GONCHARSKIJ L.A.
分类号
H01J21/18
主分类号
H01J21/18
代理机构
代理人
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