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发明名称
Flat bank multiple for selectors in telephone exchanges
摘要
申请公布号
US1938752(A)
申请公布日期
1933.12.12
申请号
US19320612584
申请日期
1932.05.20
申请人
FRIEDRICH MERK
发明人
MERK FRIEDRICH
分类号
H01H63/06
主分类号
H01H63/06
代理机构
代理人
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