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发明名称
Compass compensating device
摘要
申请公布号
US2677895(A)
申请公布日期
1954.05.11
申请号
US19530329591
申请日期
1953.01.05
申请人
FORMIS FREDERICK K
发明人
FORMIS FREDERICK K.
分类号
G01C17/38
主分类号
G01C17/38
代理机构
代理人
主权项
地址
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