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发明名称
TIMER FOR TELEPHONE BELL SILENCING DEVICE
摘要
申请公布号
CA624684(A)
申请公布日期
1961.08.01
申请号
CAD624684
申请日期
申请人
LORETTA GRAZIANI
发明人
LORETTA GRAZIANI
分类号
主分类号
代理机构
代理人
主权项
地址
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