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经营范围
发明名称
LOGARITHMIC RULE
摘要
申请公布号
CA430481(A)
申请公布日期
1945.10.09
申请号
CAD430481
申请日期
申请人
FRANCOIS PARENT
发明人
FRANCOIS PARENT
分类号
主分类号
代理机构
代理人
主权项
地址
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