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发明名称
Portable sundial
摘要
申请公布号
US2094833(A)
申请公布日期
1937.10.05
申请号
US19360118529
申请日期
1936.12.31
申请人
JOSEPH MCAULIFFE
发明人
MCAULIFFE JOSEPH
分类号
G04B49/02
主分类号
G04B49/02
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代理人
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