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经营范围
发明名称
Improvements in or relating to phase modulating apparatus
摘要
申请公布号
GB625530(A)
申请公布日期
1949.06.29
申请号
GB19470021765
申请日期
1947.08.07
申请人
WESTERN ELECTRIC COMPANY
发明人
分类号
H03K7/04
主分类号
H03K7/04
代理机构
代理人
主权项
地址
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