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经营范围
发明名称
Astronomical device
摘要
申请公布号
US1848974(A)
申请公布日期
1932.03.08
申请号
US19300455737
申请日期
1930.05.26
申请人
DAVID PHILLIPS
发明人
PHILLIPS DAVID
分类号
G09B27/02
主分类号
G09B27/02
代理机构
代理人
主权项
地址
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