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发明名称
GYROSCOPIC DIRECTION INDICATOR
摘要
申请公布号
CA422666(A)
申请公布日期
1944.09.12
申请号
CAD422666
申请日期
申请人
REID AND SIGRIST LIMITED
发明人
DAVID CREW
分类号
主分类号
代理机构
代理人
主权项
地址
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