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发明名称
Light filter
摘要
申请公布号
US1924538(A)
申请公布日期
1933.08.29
申请号
US19310520733
申请日期
1931.03.06
申请人
FARIES MANUFACTURING COMPANY
发明人
BOSTROEM AUGUST
分类号
F21V17/00;F21V17/02;G03C11/10
主分类号
F21V17/00
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代理人
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