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经营范围
发明名称
Improvements in or relating to electric signal generators
摘要
申请公布号
GB629150(A)
申请公布日期
1949.09.13
申请号
GB19480006331
申请日期
1942.08.19
申请人
THE SPERRY CORPORATION
发明人
分类号
G08C19/16
主分类号
G08C19/16
代理机构
代理人
主权项
地址
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