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发明名称
Frequency-adjusting means for high-frequency signaling systems
摘要
申请公布号
US1763224(A)
申请公布日期
1930.06.10
申请号
US19290403317
申请日期
1929.10.29
申请人
WIRED RADIO, INC.
发明人
DAVIS CHESTER L.
分类号
H03J1/04
主分类号
H03J1/04
代理机构
代理人
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地址
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