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经营范围
发明名称
Gyroscopic compass
摘要
申请公布号
US1749059(A)
申请公布日期
1930.03.04
申请号
US19230630034
申请日期
1923.04.05
申请人
SPERRY GYROSCOPE COMPANY, INC.
发明人
BASSETT PRESTON R.
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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