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发明名称
Projector
摘要
申请公布号
US2330709(A)
申请公布日期
1943.09.28
申请号
US19400337000
申请日期
1940.05.24
申请人
SPENCER LENS COMPANY
发明人
HARPER KENNARD W.;GRADISAR ALBIN A.;ARMAGOST WILLIAM K.;PECK WILLIAM F.
分类号
G03B23/00
主分类号
G03B23/00
代理机构
代理人
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