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发明名称
Light screen
摘要
申请公布号
US2398799(A)
申请公布日期
1946.04.23
申请号
US19400346257
申请日期
1940.07.19
申请人
MILLER FREDERICK R
发明人
MILLER FREDERICK R.
分类号
G03B21/56;G03B21/62
主分类号
G03B21/56
代理机构
代理人
主权项
地址
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