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发明名称
Radio ground
摘要
申请公布号
US1904773(A)
申请公布日期
1933.04.18
申请号
US19310521539
申请日期
1931.03.10
申请人
AANENSON CHRIST J
发明人
AANENSON CHRIST J.
分类号
H01Q1/48
主分类号
H01Q1/48
代理机构
代理人
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地址
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