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发明名称
Projection screen
摘要
A projection screen has first transparent particles tinted a first color and second transparent particles tinted a second color.
申请公布号
US7248406(B2)
申请公布日期
2007.07.24
申请号
US20040966009
申请日期
2004.10.15
申请人
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人
MAY GREGORY J.;ALLEN WILLIAM J.
分类号
G03B21/60;G02B5/08;G02B7/182;G02B27/10
主分类号
G03B21/60
代理机构
代理人
主权项
地址
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