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发明名称
Tensioned projection screen apparatus
摘要
A projection screen apparatus is disclosed for displaying an image projected by a projector. The projection screen apparatus includes a frame and a screen. The frame includes a plurality of frame members and corner members.
申请公布号
US7808702(B1)
申请公布日期
2010.10.05
申请号
US20080115351
申请日期
2008.05.05
申请人
DRAPER, INC.
发明人
RISHER KENNETH M.
分类号
G03B21/56
主分类号
G03B21/56
代理机构
代理人
主权项
地址
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