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发明名称
LENS HOOD
摘要
申请公布号
US3572905(A)
申请公布日期
1971.03.30
申请号
US19690813509
申请日期
1969.04.04
申请人
ERNST LEITZ GMBH.
发明人
WERNER SCHLAPP
分类号
G03B11/00;G03B11/04;G03B17/12;(IPC1-7):G02B7/02
主分类号
G03B11/00
代理机构
代理人
主权项
地址
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