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经营范围
发明名称
Improvements in or relating to hand adjusting means particularly for radio apparatus
摘要
申请公布号
GB344863(A)
申请公布日期
1931.03.09
申请号
GB19300017283
申请日期
1929.12.09
申请人
ARTHUR PREEN
发明人
分类号
H03J1/10
主分类号
H03J1/10
代理机构
代理人
主权项
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