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经营范围
发明名称
Emergency automatic radio transmitter
摘要
申请公布号
US2149808(A)
申请公布日期
1939.03.07
申请号
US19380211143
申请日期
1938.06.01
申请人
ELLIS DANIEL E
发明人
ELLIS DANIEL E.
分类号
H04B1/034
主分类号
H04B1/034
代理机构
代理人
主权项
地址
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