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发明名称
Bildprojektionsleinwand
摘要
申请公布号
CH381885(A)
申请公布日期
1964.09.15
申请号
CH19610001353
申请日期
1961.02.06
申请人
DA-LITE SCREEN COMPANY, INC.
发明人
THEODORE BETZ,HOWARD;LIVINGSTON SOWERS,HAL
分类号
G03B21/60
主分类号
G03B21/60
代理机构
代理人
主权项
地址
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