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发明名称
Ступенчатая линза типа линзы Френеля и способ изготовления пуансона для ее прессования
摘要
申请公布号
SU102950(A1)
申请公布日期
1955.11.30
申请号
SU19500432213
申请日期
1950.07.25
申请人
BOLSHAKOV I.A.
发明人
BOLSHAKOV I.A.
分类号
F21V5/00
主分类号
F21V5/00
代理机构
代理人
主权项
地址
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