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经营范围
发明名称
Electrical shutter
摘要
申请公布号
US1835612(A)
申请公布日期
1931.12.08
申请号
US19280251348
申请日期
1928.02.02
申请人
AMBROSE PEARSON FREDERICK
发明人
PEARSON FREDERICK AMBROSE
分类号
H04N5/66
主分类号
H04N5/66
代理机构
代理人
主权项
地址
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