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发明名称
Improvements in means for facilltating the plotting of navigational courses
摘要
申请公布号
GB404433(A)
申请公布日期
1934.01.18
申请号
GB19320031658
申请日期
1932.11.09
申请人
BO KLAS OSKAR LUNDBERG
发明人
分类号
G01C21/20
主分类号
G01C21/20
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代理人
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