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经营范围
发明名称
Signal chime
摘要
申请公布号
US2293671(A)
申请公布日期
1942.08.18
申请号
US19400312869
申请日期
1940.01.08
申请人
NU TONE CHIMES INC.
发明人
ALEXANDER LOWELL M.
分类号
G08B3/10
主分类号
G08B3/10
代理机构
代理人
主权项
地址
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