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经营范围
发明名称
Automatic frequency control of electromechanical transducers
摘要
申请公布号
GB724473(A)
申请公布日期
1955.02.23
申请号
GB19530011347
申请日期
1953.04.24
申请人
CLEVITE CORPORATION
发明人
分类号
B06B1/02
主分类号
B06B1/02
代理机构
代理人
主权项
地址
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