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发明名称
Projection apparatus
摘要
申请公布号
US2414867(A)
申请公布日期
1947.01.28
申请号
US19420448512
申请日期
1942.06.25
申请人
AMERICAN OPTICAL COMPANY
发明人
GRADISAR ALBIN A.;GUELLICH GUSTAV E.
分类号
G03B21/10
主分类号
G03B21/10
代理机构
代理人
主权项
地址
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