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发明名称
Illuminating device for instruments
摘要
申请公布号
US2289575(A)
申请公布日期
1942.07.14
申请号
US19400332794
申请日期
1940.05.01
申请人
SPENCER LENS COMPANY
发明人
CRITOPH DAVID I.;SCHRADER HENRY S.;HARPER KENNARD W.;RICHARDS OSCAR W.
分类号
G02B21/06
主分类号
G02B21/06
代理机构
代理人
主权项
地址
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