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发明名称
Rotary coil compass
摘要
申请公布号
US1770243(A)
申请公布日期
1930.07.08
申请号
US19220542937
申请日期
1922.03.11
申请人
PIONEER INSTRUMENT COMPANY, INCORPORATED
发明人
TITTERINGTON GEORGE A.
分类号
G01C17/30
主分类号
G01C17/30
代理机构
代理人
主权项
地址
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