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发明名称
Single hand electric alarm clock
摘要
申请公布号
US2709331(A)
申请公布日期
1955.05.31
申请号
US19500202195
申请日期
1950.12.22
申请人
ERNEST LEHNER VICTOR
发明人
LEHNER VICTOR ERNEST
分类号
G04C21/36
主分类号
G04C21/36
代理机构
代理人
主权项
地址
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