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发明名称
Portable dual display plane projector apparatus
摘要
申请公布号
US3366005(A)
申请公布日期
1968.01.30
申请号
US19650459993
申请日期
1965.06.01
申请人
VISUAL IMPACT MATERIALS, INC.
发明人
BENEDICT JOEL A.
分类号
G03B21/132
主分类号
G03B21/132
代理机构
代理人
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地址
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