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发明名称
Mechanically operated bell
摘要
申请公布号
US2443559(A)
申请公布日期
1948.06.15
申请号
US19460689475
申请日期
1946.08.09
申请人
GARCEAU FRED T
发明人
GARCEAU FRED T.
分类号
G08B17/02
主分类号
G08B17/02
代理机构
代理人
主权项
地址
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