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经营范围
发明名称
Improvements in or relating to electrical amplifiers
摘要
申请公布号
GB620042(A)
申请公布日期
1949.03.18
申请号
GB19460011713
申请日期
1946.04.16
申请人
SPERRY GYROSCOPE COMPANY, INC.
发明人
分类号
G01C19/38
主分类号
G01C19/38
代理机构
代理人
主权项
地址
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