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发明名称
Means of effecting visuality by reflected light
摘要
申请公布号
US1859682(A)
申请公布日期
1932.05.24
申请号
US19290336186
申请日期
1929.01.30
申请人
JENKINS PETROLEUM PROCESS COMPANY
发明人
RANSTEAD NORMAN H.
分类号
G02B23/24
主分类号
G02B23/24
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代理人
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