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发明名称
HIGH FREQUENCY SIGNALLING SYSTEM
摘要
申请公布号
CA327521(A)
申请公布日期
1932.11.08
申请号
CAD327521
申请日期
申请人
THE WIRED RADIO INC.
发明人
CHESTER L. DAVIS
分类号
主分类号
代理机构
代理人
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