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经营范围
发明名称
Translucent picture projection screen and manufacture thereof
摘要
申请公布号
US2257999(A)
申请公布日期
1941.10.07
申请号
US19380225973
申请日期
1938.08.20
申请人
BODDE BERNARD M
发明人
BODDE BERNARD M.
分类号
G03B21/62
主分类号
G03B21/62
代理机构
代理人
主权项
地址
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