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经营范围
发明名称
Electrical alarm clock
摘要
申请公布号
US1974409(A)
申请公布日期
1934.09.25
申请号
US19310536504
申请日期
1931.05.11
申请人
STANFORD PRODUCTS, LTD.
发明人
BROWER WILLIAM M.
分类号
G04C21/20
主分类号
G04C21/20
代理机构
代理人
主权项
地址
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