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发明名称
Optical viewing apparatus with a projection screen
摘要
申请公布号
US3194113(A)
申请公布日期
1965.07.13
申请号
US19620228715
申请日期
1962.10.05
申请人
ALOS AG
发明人
KNUS JEAN A.
分类号
G03B21/11
主分类号
G03B21/11
代理机构
代理人
主权项
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