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经营范围
发明名称
Improvements in or relating to signal collecting systems for radio receivers
摘要
申请公布号
GB555735(A)
申请公布日期
1943.09.06
申请号
GB19420002723
申请日期
1942.03.02
申请人
JOHNSON LABORATORIES, INCORPORATED
发明人
分类号
H01F21/06;H03H2/00
主分类号
H01F21/06
代理机构
代理人
主权项
地址
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