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经营范围
发明名称
Electronic circuit
摘要
申请公布号
US2280630(A)
申请公布日期
1942.04.21
申请号
US19390303732
申请日期
1939.11.10
申请人
CISIN HARRY G
发明人
CISIN HARRY G.
分类号
H03F1/54
主分类号
H03F1/54
代理机构
代理人
主权项
地址
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