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经营范围
发明名称
Wave transmitting and amplifying
摘要
申请公布号
US1823322(A)
申请公布日期
1931.09.15
申请号
US19210525906
申请日期
1921.12.30
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
HEISING RAYMOND A.
分类号
H03C1/16
主分类号
H03C1/16
代理机构
代理人
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地址
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