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发明名称
MECHANICAL CALCULATORS FOR GEOGRAPHICAL POSITIONS
摘要
申请公布号
CA530103(A)
申请公布日期
1956.09.11
申请号
CAD530103
申请日期
申请人
OAKLEY B. GWILLAM
发明人
OAKLEY B. GWILLAM
分类号
主分类号
代理机构
代理人
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