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经营范围
发明名称
Photographic and projection objective
摘要
申请公布号
US1899069(A)
申请公布日期
1933.02.28
申请号
US19290402837
申请日期
1929.10.28
申请人
KAPELLA LIMITED
发明人
WARMISHAM ARTHUR
分类号
G02B9/34
主分类号
G02B9/34
代理机构
代理人
主权项
地址
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Cementitious binders containing ground granulated blast furnace slag
Waterproof lighting arrangements
Vibrating screen
Component assembly
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