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发明名称
Double-grid-tube transmitter
摘要
申请公布号
US1770486(A)
申请公布日期
1930.07.15
申请号
US19280252182
申请日期
1928.02.06
申请人
GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE M. B. H. HALLESCHES
发明人
JOBST GUNTHER;RODER HANS
分类号
H03C1/24
主分类号
H03C1/24
代理机构
代理人
主权项
地址
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