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经营范围
发明名称
Improvements in or relating to electrical oscillation generators
摘要
申请公布号
GB505252(A)
申请公布日期
1939.05.04
申请号
GB19370030192
申请日期
1937.11.04
申请人
WILLIAM SPENCER PERCIVAL
发明人
分类号
H03K4/16
主分类号
H03K4/16
代理机构
代理人
主权项
地址
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