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经营范围
发明名称
Earth inductor compass
摘要
申请公布号
US2434324(A)
申请公布日期
1948.01.13
申请号
US19440557532
申请日期
1944.10.06
申请人
CONTROL INSTRUMENT COMPANY, INC.
发明人
LEHDE HENRY
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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